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5-Oku-nen Button: Inoue Hakase and the Inventor Side

August 18, 2026 · 500000000 years button, Anime, Groups & Factions

POPROT / ANIME / 500000000 YEARS BUTTON / GROUPS & FACTIONS

Inoue Hakase and the Inventor Side

Inoue Hakase represents the suspicious science-comedy lane: devices appear, explanations wobble, and the cast has to decide whether to engage.

Function in the Series

This group matters because 5-Oku-nen Button runs on interactions between family need, impossible invention, and short-form sketch logic.

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