Vs. Best Jeanist
  • Climax Battle
  • 7 runs

Vs. Best Jeanist

First run
Dec 27, 2022 15:00 – Jan 20, 2023 23:59 (JST)
Last run
Mar 23, 2026 00:00 – Mar 28, 2026 23:59 (JST)
Unlock
Clear Main Quest 5-9 (Normal)
Climax Emblem (Vs. Best Jeanist)

Runs

7 runs of this boss. Pick one: the dates, recruit, Event Shop lineup and missions below follow it.

Run 2 of 7
Announced
Apr 18, 2023 15:00 (JST)
Event Open
Apr 22, 2023 15:00 – May 11, 2023 23:59 (JST) 20 days
Reward Period
Until May 12, 2023 23:59 (JST)
Missions
1 daily + 37 ongoing missions30 a day · 2,410 from the ongoing missions
Recruits that started during this run (3)
Every run at a glance
RunBattlesRewards untilShop rowsMissionsEmblems from missionsLinked recruit
Run 1Dec 27, 2022 – Jan 20, 2023Jan 28, 2023282 + 3930/day + 910Climax Battle Select Recruit
Run 2Apr 22, 2023 – May 11, 2023May 12, 2023301 + 3730/day + 2,410—
Run 3Oct 21, 2023 – Nov 9, 2023Nov 16, 2023301 + 4130/day + 2,460—
Run 4Feb 10, 2024 – Mar 2, 2024Mar 6, 2024301 + 4330/day + 2,460—
Run 5Mar 4, 2025 – Mar 10, 2025Mar 12, 2025302 + 3030/day + 1,450—
Run 6Sep 13, 2025 – Sep 27, 2025Sep 30, 2025302 + 3630/day + 1,630—
Run 7Mar 23, 2026 – Mar 28, 2026= battles end342 + 37500/day + 3,390Once-Daily Free 10x Recruit! Climax Battle Select Recruit: Vs. Best Jeanist

Classes at a glance

ClassLv.HPPhases (HP floors)Rec. BPEmblems / clearFirst clear (once)Every run
CLASS B40149,5002 (40%)110,000≈60—
  • ×50
CLASS A60369,5002 (60%)180,000≈120—
  • ×50
CLASS S801,089,5003 (80% · 40%)240,000≈320—
  • ×50
CLASS SS1301,414,5004 (90% · 50% · 15%)—≈400
  • ×50

Emblems per clear are the expected value of the two drop rows (100% + 50%). “First clear (once)” is the quest's own first-clear reward; “Every run” is a second clear reward the data keeps per run, so it most likely paid out again in every run (inferred).

Battles

CLASS B

  • Rec. BP 110,000
  • Phase 2 phases
Clear reward (every run)
  • Hero Gem×50
Drops
  • ×40100%
  • ×4050%

≈ 60 Emblems per clear (expected)

Recommended
  • Power DOWN
  • Damage DOWN

Opponents

  • MND

    Best JeanistBoss

    Lv. 40HP 149,500Power ≈20,700Speed ≈278DEF 100Crit 15%

    Traits & skills

    ■Traits
    ・Decreases the skill impact of opponents that are STR, ABL, and INT type characters.
    ・His skill impact and normal attack skill impact increase every turn.
    ・The status ailments he inflicts cannot be nullified, restricted, or canceled.
    ・His skill impact increases when his power is not decreased.
    ・His power decreases when blinded.
    ・The skill impact of all of his opponents increases after he receives a certain number of attacks from DST type characters (multi hit attacks=1 attack).
    ・The defense of all of his opponents increases after he receives a certain number of attacks from MND type characters (multi hit attacks=1 attack).
    ・When using a damage-dealing skill, he gains piercing shot if his opponent is using barrier.
    ・Uses a skill that gives him the ability to multi-use skills.
     *Multi-use skills cannot be canceled, blocked, or restricted.
    ・Every time his HP falls to a set amount or lower, a new phase begins and his behavioral patterns change.
     *He becomes invincible when starting a new phase.

    ■Main Skills
    ・A damage-dealing skill that, when his power is not decreased, stuns his opponent and cancels their temporary buffs.
    ・A skill that gives him the ability to nullify normal attacks and counter when his power is not decreased.
    ・A skill that gives him the ability to multi-use skills.
    ・A damage-dealing skill that affects all and decreases the Plus Ultra Gauge of opponents not affected by Damage DOWN.

HP = base + growth × (Lv − 1) + the battle's bonus, the formula the game server uses. Power and Speed are worked out the same way (inferred, marked ≈).

Phases

  1. Phase 1

    Auto Skills

    • Eighth Time Champion
      Increases their skill impact by 30% when power is not decreased.
      Every turn, increases their skill impact by 2% for 10 turns and normal attack skill impact by 2% for 10 turns. *This buff cannot be canceled, blocked, or restricted.
      Increases skill impact of all of their opponents by 2% for 10 turns after receiving 4 attacks from DST type opponents (multi hit attacks=1 attack).
      Increases defense of all of their opponents by 2% for 10 turns after receiving 4 attacks from MND type opponents (multi hit attacks=1 attack).
      Decreases their power by 10% when blinded.
    • Tight Jeans
      Decreases skill impact of all STR type, ABL type, and INT type opponents by 10%.
      Reduces burning and bleeding damage they receive by 90%.

    Skill rotation

    1. Hanging Fibers ×2
    2. Fiber Counter ×2
    3. Corrective Restraint ×2
  2. HP ≤ 40% (59,800)Phase 2
    Best Jeanist

    Jeans that fit...
    Let's get to the bottom of this.

  3. Phase 2Final phase

    Skill rotation

    1. Subtle Control ×2
    2. Corrective Restraint
    3. Fiber Counter ×2
    4. Hanging Fibers

Each phase shows the Auto Skills of that phase's AI set; whether earlier phases' Auto Skills stay active is not in the data. Alternate-pattern states are decoded from the AI triggers (inferred).

Event Shop

Paid with this boss's Climax Emblems. The list follows the run picked above.

  • 5,000
    Limit ×1
    Total 5,000
  • [Ray of Hope] Best Jeanist Orb αEvery run
    250
    Limit ×1
    Total 250
  • [Ray of Hope] Best Jeanist Orb βEvery run
    350
    Limit ×1
    Total 350
  • 90
    Limit ×45
    Total 4,050
  • 15
    No limit
    —
  • 2,500
    Limit ×3
    Total 7,500
  • Climax Battle December UR Memory TicketEvery runUsed at: Climax Battle December UR Memory Ticket
    3,500
    Limit ×1
    Total 3,500
  • Limit Breaker UR FragmentEvery run since Run 2 (Apr 2023) · new limit each run
    200
    Limit ×1
    Total 200
  • Limit Breaker SR FragmentEvery run since Run 2 (Apr 2023) · new limit each run
    60
    Limit ×5
    Total 300
  • MAX Power! Ball (Small) ×5Every run
    5
    Limit ×7
    Total 35
  • Hold On! Health Ball (Small) ×5Every run
    5
    Limit ×7
    Total 35
  • Extreme Speed! Ball (Small) ×5Every run
    5
    Limit ×7
    Total 35
  • Small Screw (DST) ×5Every run
    5
    Limit ×5
    Total 25
  • Small Nut (DST) ×5Every run
    5
    Limit ×5
    Total 25
  • Extreme Speed! Pack (Large) ×5Every run
    5
    Limit ×15
    Total 75
  • Extreme Speed! Can (Large) ×5Every run
    5
    Limit ×15
    Total 75
  • Medium Cylinder (DST) ×5Every run
    5
    Limit ×15
    Total 75
  • Medium Chip (DST) ×5Every run
    5
    Limit ×10
    Total 50
  • Medium Battery (DST) ×5Every run
    5
    Limit ×15
    Total 75
  • Medium Light (DST) ×5Every run
    5
    Limit ×10
    Total 50
  • Intricate Gears (DST) ×5Every run
    5
    Limit ×10
    Total 50
  • Hold On! Health Pack (Large) ×5Every run
    5
    Limit ×15
    Total 75
  • Hold On! Health Bottle (Large) ×5Every run
    5
    Limit ×10
    Total 50
  • Hold On! Health Can (Large) ×5Every run
    5
    Limit ×15
    Total 75
  • Charged-up Cylinder (DST) ×5Every run
    5
    Limit ×25
    Total 125
  • Charged-up Battery (DST) ×5Every run
    5
    Limit ×20
    Total 100
  • Charged-up Light (DST) ×5Every run
    5
    Limit ×15
    Total 75
  • MAX Power! Pack (Large) ×5Every run
    5
    Limit ×15
    Total 75
  • MAX Power! Bottle (Large) ×5Every run
    5
    Limit ×10
    Total 50
  • MAX Power! Can (Large) ×5Every run
    5
    Limit ×15
    Total 75

Buying everything in Run 222,455(not counting the items with no limit)

Unspent Emblems carry over to the next run of the same boss; another boss's shop does not take them.

Rows kept from run to run have one purchase counter in the data, so their limits most likely count across all runs: the boss card can be bought once per account (inferred). Rows added anew each run start a fresh limit.

Climax Battle Missions

Run 2 of 7 Apr 22, 2023 15:00 – May 11, 2023 23:59 (JST) Open in Missions →

30 a day · 2,410 from the ongoing missions

Team missions ask for

  • Endeavor
  • Tomura Shigaraki
  • Hawks
  • Katsuki Bakugo
  • Take on a Climax Battle 1 time.
    • Climax Emblem×30

The master data has no link from a mission to a run: they are matched by date (each mission's end falls inside one run) and agree with every mission that names a quest or pays an Emblem.

Dialogue

Show every line
  • First visit (CLASS B open)

    Best Jeanist

    One of my duties is reforming people like
    you. Let me take the lead!

  • CLASS A unlocked

    Best Jeanist

    It seems a little loose on you.
    Just a bit of mending to tighten you up.

  • CLASS S unlocked

    Best Jeanist

    Exceeding my plans already?
    That's more like it.

  • CLASS SS unlocked

    Best Jeanist

    Splendid. No more mending...
    From today, let's work as heroes.

  • CLASS SS cleared

    Best Jeanist

    Wherever you go, I feel you'll overcome
    whatever happens to you.

Lines on the Climax Battle screen as you progress (when each one shows is read from the data: inferred).

How Climax Battles work

  • Unlocked by clearing Main Quest 5-9 (Normal).
  • CLASS B → A → S → SS: clearing a class unlocks the next.
  • No Stamina, no skip tickets, no turn limit, no team restrictions.
  • A boss changes phase at set HP thresholds; until the phase change plays, its HP cannot drop below the threshold.
  • Each class pays Hero Gems ×50 on its first clear of every run (inferred: the data keeps this reward per run); CLASS SS also gives the boss's UR card on the account's first clear ever.
  • Climax Emblems drop from every clear and carry over to the boss's next run.
  • Tries instead of Stamina: 3 a day*, shared by every Climax Battle, reset at 00:00 (JST). A defeat or a forfeit costs no try.
    *Inferred: the number is server-side; no run's missions ask for more than 3 clears a day, and many ask for exactly that.
The game's own help

What are Climax Battles?

Climax Battles are extreme difficulty challenges with the ultimate bosses.
Complete the highest difficulty level CLASS SS to get your hands on a new UR character.

You will receive Climax Emblems as a part of your completion rewards.
Use these Climax Emblems to purchase various items at the Climax Battle Event Gear Shop.

Climax Battles are not always open.
Once an event period closes, you will only be able to receive Mission Rewards and use Climax Emblems to purchase items.
After some time, you will no longer be able to access Climax Battles to receive rewards or use your Climax Emblems. Climax Battles will be closed until the next event period.

▼How to Unlock Climax Battles
Complete Main Quest Ch. 5-9 (NORMAL)

Classes

There are several tiers of difficulties in Climax Battles labeled with a different "CLASS".
The next CLASS becomes unlocked when you complete the previous CLASS.
The higher the CLASS, the more difficult your opponents will be.
In exchange, your rewards will get better as you climb up in difficulty.

The most difficult CLASS SS is quite the challenge, but you will receive a UR character the first time you complete it.

Tries

Instead of using Stamina, you will have a number of "tries" to use when taking on Climax Battles.

There is a limit to the number of tries that you can use. They reset at 00:00 (JST) every day.
You will not use up your tries if you are defeated or if you forfeit.
*The daily number of tries is for all Climax Battles.

Event Gear Shop

You can use the Climax Emblems you obtain to exchange with various rewards at the Climax Battle Event Gear Shop.

At the Event Gear Shop, you can exchange your Emblems with the UR characters that appear in battle as bosses, UR character pieces, UR character orbs, and more.

Even after one event period ends, Climax Emblems can be exchanged later in the next event period where that boss appears in battle.
However, Climax Emblems will not roll over if the boss that appears in battle is different.

Missions

You can obtain lots of different rewards by completing the various tasks given in the Climax Battle Missions.
You can check on the progress of your Missions by going to the Missions tab within Climax Battle.
*Climax Battle Missions will not be included in the main Missions area from the Home Screen.

There are two types of Missions—"Daily" and "Ongoing".

Tap on the "Claim" button after completing a Mission to receive your rewards.
Tap on "Claim All" to receive all of the rewards of Missions that you have completed.

Tap on "Filter" to see Missions based on their completion status.

Phases

During Climax Battles, a new Phase begins every time certain set conditions are met. This causes changes in attack patterns and sometimes triggers different animations.

When an animation is triggered because of a Phase change, HP will not go below a certain amount, and the opponent will not take any damage.

Data: the game's final master data (client 5.0.0). It holds one copy of each boss's battles, so early runs may have used other enemy stats or rewards.