its not a hentai, but dont look it up just take my word from it (pretty good fap though) 

Dude amazing if yk what i mean 😏 i watched all the eps innone night hehe😅

denpa

回レ! 雪月花

Ram & Rem's verbal abuse in the form of a song.

artist: unknown

anime is re:zero kara hajimeru isekai seikatsu.

Source:-
Bitter Sweet Harmony - Aiko Nakajima
(Sunoharasou no Kanrinrin-san OP)

子♡丑♡寅♡卯♡辰♡巳♡ / でんぱ組.inc

EDIT: I HAVE RE-UPLOADED A HIGHER QUALITY VERSION OF THIS TRACK
https://soundcloud.com/user-13883713/its-good-for-midnight-1

This is not owned by me. Follow Amelia Watson on youtube. 
https://www.youtube.com/watch?v=RcDA3Qlv1jU