Henkyou no Ofuroya-san, Harem ni Naru: Yamaoku ni Aru Sabireta Onsen no Kounou ga Cheat Sugite Onna Boukensha ni Daininki na Ken - Vol. 1 Ch. 2

[popo53414]

don't tell me this is based off those healing tanks in DBZ.

 

[xanon]

Restores her arm but it still has scars. Okay.

He reattached her arm, so naturally it'd still have the scars. You can see him holding the severed arm on page 14 when he jumps off the cliff.