Jackass! - Sawatte Ii tte Dare ga Itta yo?
Complete | Scarlet Beriko | 2015 released
Doushiyoumo Nai Keredo
Complete | natsume isaku | 2005 released
Joou to Shitateya
Complete | Scarlet Beriko | 2013 released
That's the second Scarlet Beriko's manga with the sex scen in the bath I've read. I wonder if there's more.
Merry Checker