Boku dake ga Inai Machi - Vol. 6 Ch. 32 - "The Spider's Thread, October 1971 – April 1987"

[MangaDex]

 

[duaangka22]

This is an interesting backstory

 

[BakedBanana]

Disappointed this wasn't in the anime. :/

 

[AnonymousContributor]

cool backstory but this mf needs death by firing squad like this mf might be a pedo, so he's among the lowest of the low even for criminals (IMO)