An threesome mangas ? Two Boys and one woman?

Or two woman one man?

http://www.mangago.zone/read-manga/haitoku_wa_amaku_mushibamu/

http://www.mangago.zone/read-manga/aisuru_hito/ (for this one, I'm not sure. She sleeps with the 2 brothers but I can't remember if there is a threesome or not)