Found it. There is a story connected to this one. In Kyozana's comment
1 Pinup Boy - A bar staff wears lingerie, Hajime x Masaki, mama's nephew
2 Otoshiana ni Hamerarete - A Cross-dresser Seme, Shouta x Hiroto
3 Yoru Mo Hi Mo Akenai - Mama of the bar, Yoshio x Yakuza Tenma
4 Mayonaka Love Alliance - Continued story of the couples in 1 & 2
or maybe this is the order. I also found it on one of the comment in "Pinup boy"
First Book: Yoru Mo Hi Mo Akenai
Second Book: Otoshiana Ni hamerarete
Third Book: Pin up Boy
Fourth Book: Mayonaka Love Alliance
http://www.mangago.zone/read-manga/otoshiana_ni_hamerarete/uu/otoshiana_ni_hamerarete-chapter-2/30/
ohhh~ And guys from "Hi manyuaru ren'ai"
Thank you!!
I know the story of the one with black-red ombre hair, but what about the others? Is there a story of them?