so all i can remember is a guy betrayed his mafia bros and his punishment was to have his arms cut off. his friend (a yakuza) cut them off and gave them to their boss.
and then his friend took care of him after.
sorry if this is posted in wrong spot, just started using this site.

i have searched all over myanimelist and have had no luck 🙁

I believe the manga you're looking for is Venus ni Seppun

Kyou-kun~

yes that is it! thank you!!