Boss Guide#
Boss fights in Infinite Wealth run through the main line and two underground dungeons. This page lists only the verified boss roster and fight structure; circulating move tables, HP numbers, drop rates, and recommended levels have no source and are not included. Universal prep advice sits at the end and applies to every fight.
The Verified Boss Roster#
| Boss | Source | Notes |
|---|---|---|
| Goro Majima + Taiga Saejima + Daigo Dojima | thegamer.com boss guide | A three-boss fight in one battle — series legends share the stage |
| Chau Ka Long | thegamer.com boss guide | One of the main-line boss fights |
| Giant squid | thegamer.com boss guide | A special large-enemy battle |
| Bryce Fairchild | screenrant.com | The final enemy of the Hawaii line |
| Masataka Ebina | screenrant.com | The true final boss; the decisive battle happens in Japan |
On the finale’s structure: Bryce Fairchild closes the Hawaii line, while the true final boss is Masataka Ebina, fought in Japan; Eiji Mitamura is a key character in that story arc. The circulating “final-chapter boss Daidoji” and “Ultimate Banchō” don’t exist — both are misremembered.
Dungeon Floor Bosses#
Both underground dungeons group their floors into zones of 5, each guarded by a boss (sources: thegamer.com, gamepressure.com):
| Dungeon | Floor Boss | Location |
|---|---|---|
| Hawaiian Haunt (Honolulu, Chapter 5) | Boomstick Banneret | B5F zone |
| Hawaiian Haunt | Top Dog | B10F zone |
| Hawaiian Haunt | Stress Tester | B15F zone |
| Yokohama Underground (Yokohama, Chapter 10) | Utamaru | B30F zone (the dungeon NPC is also Utamaru) |
Hawaiian Haunt is a randomized-layout dungeon with 3 zones of 10 floors each. Floor-boss fights follow the same logic as ordinary boss fights: confirm the weakness element (fire / ice / lightning) first, then counter with matching weapons and skills.
The dungeons’ resident NPCs matter too: Hawaiian Haunt’s guide is “Robo Michio,” while Yokohama Underground is run by Utamaru — whose B30F floor boss is also Utamaru. Sort your job loadout and item pouch before diving deep. Deeper floors yield better loot: floor progression unlocks higher forge materials in the Fragments → Geodes → Crystals sequence (Lava / Ice / Electric / Rainbow lines), while “Survey Data” and “Robo Disks” are dungeon-exclusive currencies — pairing floor-boss kills with material farming in one dive is the efficient route (full material and currency details on the Useful Resources page).
Hidden Boss: The Amon Clan#
The bottom of Yokohama Underground hides the series-traditional secret boss — the Amon clan:
| Item | Verified Content |
|---|---|
| Members | Kazuya / Jiro / Sango / Jo, all four in one fight (source: gamefaqs.gamespot.com) |
| Level | Lv 55 |
| Location | Bottom floor of Yokohama Underground |
| Traits | Four distinct weaknesses — you’ll need targeted element and job swaps |
The four-man fight is about focus-fire order and ailment management: break them down by weakness one at a time, and keep healing and revival ready for the constant area attacks. This is the base game’s peak difficulty — don’t force it with an unfinished first-run roster: Yokohama Underground is re-enterable, so push floors, raise job levels, then return for the Amon clan (dungeon structure and secrets also on the Secrets page).
Universal Boss Framework#
These apply to every boss in the game (qualitative experience, no unverified numbers):
- Prep first: eat a restaurant meal for buffs; confirm healing and revival stock.
- Read the weakness: counter with fire / ice / lightning weapons and skills, applying burn / freeze / paralysis.
- Position within the turn: strike from behind, dodge warning zones, grab environmental weapons for extra damage.
- Chain skills into QTEs: successful follow-ups pay real bonuses — every point of output matters in boss fights.
- Call Poundmates: summons add action economy; don’t be stingy in hard fights.
- Protect the leader: Kasuga falling ends the fight — front-line protection and revival items outrank max DPS.
- Swap jobs for weaknesses: in multi-enemy fights with mixed weaknesses (like the Amon clan), plan job assignments at Hello Work in advance.
One more thing that shapes all prep: the base game has no difficulty settings — only battle speed and the like — so every boss fight’s strength is fixed. Winning more comes from job assignments, meal buffs, and item stockpiles. Difficulty tiers exist only in NG+ — paid DLC content, across Normal / Hard / Legend; refighting these bosses at higher intensity is a post-game plan, detailed on the Endgame Content page.
The roster itself shifts with the story: from Chapter 8, Kasuga’s party operates in Hawaii while Kiryu’s operates in Japan, so the two sides face different boss lineups. Kiryu’s unique Dragon of Dojima job can trigger Heat Actions, with upgrade paths split across Soul / Tech / Body — the core damage engine for Japan-side fights (full job and skill mapping on the Jobs and Skills pages).
Side Mode: Sujimon Raid#
The Sujimon system has its own Raid battles: the Break It Up! achievement requires completing 20 Sujimon Raids. These use Sujimon teams — a parallel system to main-line boss fights, and raising high-rarity Sujimon helps push deep raids.
Raids obey the same elemental counters as everything else: Sujimon split into Blaze, Frost, Nature, Light, and Shadow, with ice beating fire, fire beating grass, grass beating ice, and light/shadow countering each other. Field multiple elements and adjust your send order to the opponent’s weaknesses — steadier than stacking one element’s levels. The same counter web underpins the Sujimon League, so both modes share one investment (the full element system is on the Combat System page).
Pre-Fight Checklist#
No invented numbers here — every item maps to a verified mechanic:
| Check | Notes |
|---|---|
| Meal buffs | Dine at a restaurant before the fight for temporary pre-battle buffs |
| Element coverage | Field fire / ice / lightning weapons and skills for mixed-weakness fights |
| Job assignments | Reclass at Hello Work ahead of time; availability differs per character — check the list before the fight |
| Healing and revival | Always stocked — the leader rule means Kasuga down = loss |
| Poundmates | Summons add actions (30 cumulative uses earn the Pound for Pound achievement) |
| Battle speed | Speed up for grinding and trash; return to normal for bosses |
| Weakness info | Dungeon floor bosses differ fight to fight — confirm, then focus fire |
The hardest discipline is “swap jobs for weaknesses”: against four-weakness fights like the Amon clan, brute-forcing with one setup is terribly inefficient — pre-fight planning beats mid-fight improvisation.
Bosses and Newcomers#
Repeatedly losing a main-line boss? Diagnose in this order (non-grinding checks first):
- Is the leader being focused? Is Kasuga standing inside area-attack warning zones?
- Is your element countering? Or are you chipping away with a neutral attribute?
- QTE hit rate: the gap between perfect and failed inputs on the same rotation is significant;
- Buffs active? Reapply when meal buffs expire;
- Are job roles sane? Front line actually tanking, healer with headroom?
Each is a direct application of verified mechanics. If all five check out and you still lose — then consider leveling and gear.
FAQ#
| Question | Answer |
|---|---|
| What level for main-line bosses? | We don’t print unverified level numbers; the only verified chapter levels are Chapter 3 (8-10) and Chapter 4 (10-17) from game8.co — see their chapter pages for the rest |
| Who is the final boss? | Masataka Ebina, fought in Japan; Bryce Fairchild closes the Hawaii line |
| Is there a Millennium Tower? | No — that’s Yakuza 7 DLC content bleeding into memory |
| Where is the hidden boss? | The Amon clan, bottom floor of Yokohama Underground |
| Can bosses be refought? | Unverified on refight mechanics; dungeons are re-enterable — floor boss and hidden boss respawn rules follow the game |
A Note on Recommended Levels#
Worth stating plainly: the old version of this page tagged every boss with “recommended level 40-45 / 50-55” style ranges. Those numbers had no source and have all been deleted. The only reliable level reference is game8.co’s per-chapter recommendations (we’ve verified only Chapters 3 and 4). Judge boss difficulty by your chapter progress and team state — carry extra healing rather than trusting invented numbers.
Deleted Fabricated Content#
The old version of this page contained substantial errors, all removed in this rewrite, including:
- Fabricated main-line boss descriptions (“Kaito tutorial fight,” “Majima’s 3 clones mechanic,” “Kiryu’s tiger-drop counter”) — roster and mechanics didn’t match real data;
- Nonexistent bosses (“Ultimate Banchō (4 phases),” “Daidoji,” “Kiryu’s shadow”);
- An “Ultimate Millennium Tower” with floor tables — this game has no Millennium Tower mode (a mix-up with Yakuza 7’s DLC “The Final Millennium Tower”);
- All drop rates, damage numbers, recommended levels, and reward item lists.
Scope Statement#
Per-boss move tables, weaknesses, HP, and reward drops require hands-on testing or reliable sourcing; this verification pass found none, so none are printed. For detailed fight guides, see thegamer.com’s boss coverage and game8.co’s chapter guides; for dungeon floor bosses and the Amon clan, gamefaqs.gamespot.com and gamepressure.com’s dungeon pages.