Shonen Hero Saga — Origin → Academy → Tournament → War (3D)

## What this is A **single-file autonomous 3D shonen anime hero saga**. 5 arcs, 5 hero forms, 8 named characters, 8 minutes per loop. Origin to Academy to Tournament to War to Final Battle. The hero ages from 6 to 17. Forever. ## Why this is mind-blowing **ARC 1 — ORIGIN (Hero, age 6).** Cam: WIDE on hometown. Cherry-blossom petals fall. Mt. Fuji backdrop. Hero KAITO chases a butterfly. Speech bubble (kid font): *"Otou-san! Look!"* Then — kanji banner red — 怒 (FURY). Hero's house burns. Master ICHIRO appears. *"Boy. You will train."* **ARC 2 — ACADEMY (age 12).** Cam: MASTER_CU. Dojo statue. Hero in academy form. Rival KENJI introduced. Power level meter: 240. Master HAYATO (gold, deep narrator): *"At the Academy, KAITO learned the Three Forms."* **ARC 3 — TOURNAMENT (age 15).** Cam: AERIAL on arena. 140 cheering crowd InstancedMesh. Confetti. Banner: 友 (FRIENDSHIP). Episode 27. Hero defeats Rival in semis. Power: 1820. Lady KIRA: *"And the crowd in [CITY] sees a champion rise."* **ARC 4 — WAR (age 16).** Cam: IMPACT. Red moon. Lava. Fortress. 8 named comrades fall. Banner: 死 (DEATH). Power: 4400. Heroine MITSUKI: *"KAITO! You promised!"* Sepia flashback to Arc 1. **ARC 5 — FINAL BATTLE (age 17).** Cam: HERO_CU. Hero at Ultimate Form. Speech bubble (shout font): *"極 — THIS ENDS HERE!"* White flash. Screen shake. Power: 9999. Banner: 結 (CONCLUSION). 12s epilogue. Reseed. New hero from new village. New rival. Loop.

An autonomous 3D shonen anime hero saga across 5 arcs (Origin → Academy → Tournament → War → Final Battle). Hero ages 6→17 across 5 parametric forms (Child → Academy → Fighter → Awakened → Ultimate), rebuilt parametrically per transition. ~95s per arc + 12s epilogue + reset = ~487s loop (8 min). Sub-scenes: hometown (cherry-blossom petals + Mt. Fuji + houses, hero's house burns at 'village destroy' beat), academy (3 dojos + statue + dust), tournament arena (ring + ropes + 140-figure cheering crowd + confetti), battlefield (red moon, lava, fortress, explosions). 8+ named characters: hero, master, rival, heroine, coach, villain, 3 named comrades — all randomly reseeded each loop from pools. 6 director cams (WIDE / HERO_CU / RIVAL_CU / MASTER_CU / IMPACT / AERIAL) with smooth lerp, plus PIP cam top-right. Broadcast UI: SHONEN NETWORK + 少年伝説 logo + LIVE; arc kanji banner top; episode counter; hero portrait with live-drawn pixel face + power level meter (5 → 9999); CAM label; lower-thirds; ticker; vignette + scanlines. Big-moment FX: kanji banners (怒/力/友/覚/勝/極/裏/死/激/結), white flashes, screen shake, slash lines, flashback sepia tint. Speech bubbles (DOM, projected via vector.project(camera)) for hero / master / villain in distinct styles (shout, master, villain). Two narrator anchors: MASTER NARRATOR HAYATO (gold) + LADY KIRA (white) — TTS via SpeechSynthesisUtterance with voice pitch tuning + voiceschanged guard. Forever loop: full disposal of geometries/materials, reseed all data pools, reset state, rebuild scenes.

What I learned shipping it

A POWER LEVEL meter that ticks 5 → 9999 across the saga is the most insanely effective shonen trope ever — viewers stick around for arc 5 because they want to see the number HIT IT'S ULTIMATE — every fight feels meaningful because the meter validates it.

Kanji banners (怒力友覚勝極裏死激結) for big moments do all the emotional work that 30 lines of subtitles couldn't — viewers don't need to read Japanese to feel the punch when 力 (POWER) hits the screen.

DOM speech bubbles projected via vector.project(camera) and re-rendered each frame look exactly like manga panels overlaid on 3D — it's the cheapest possible way to ship a 'looks like an anime' effect on top of three.js.