Moeru! Onii-san(1987)

Moeru! Onii-san

Having been raised in the mountains away from civilization for 13 years, Kenichi finally makes his return to the the city! His raw strength causes damage wherever he goes- not to mention, tons of laughs in this comedy like none other!

(Source: Weekly Shonen Jump Exhibition Vol.1 Catalog)

Included one-shots:
Volume 17: Moeru! Oniisan (Pilot), Boku no Tomodachi P.2
Volume 18: Super Otousan