in earlier chapters Soushi talked about how him & Sunamoto used to share girls. It probably wasn't an outright threesome though
as far as we know....lol
I think it was an outright threesome though? See the right bottom panel there: http://www.mangago.me/read-manga/soushi_souai/nbt/m_v-3-chapter-25/pg-22/ It kinda really made me sad :(
Nah it was an outright threesome. He said they always shared gfs and that all the gfs seemed innocent but werent (because they were okay with being shared abd having threesomes)
Tbh that part made me kinda sad and disgusted. Megumi is so innocent compared to the BF
Wait- that one panel in chapter 25. Did Soushi had a 3some with Sunamoto and some other girl? Or did my eyes just deceive me??