Doushitemo Furetakunai
Another great manga from Yoneda Kou. It isn't that angsty compared to his other works, but it is a drama with some funny moments, about a gay new employee and his straight boss. As opposed to the tag bittersweet and dark pasts, it's more that one had a childhood trauma that made his want to hear that he is liked and wanted, and the other had past trauma with other men in the workplace that made his not want to be wanted.
Boku wa Kimi no Iinari
A guy who found out he was gay in middle school closes himself off to the possibility that anyone would ever like him. The guy he likes finds out about it and starts...it's a cute story, with a plot from the beginning to the end that isn't rushed, with character building and plenty of steamy scenes.
Kasa No Shita, Futari