Deki no Ii Kiss Warui Kiss
Meet Tetsuo Atarashi. Age: 32. Occupation: porn comic writer. Marital Status: single, but has an estranged 14-year-old son who he fathered at the irresponsible age of 17. Sexual Potency: Currently None. Given such circumstances, it seems only natural that all Tetsuo desires is a kiss potent enough to get him back to his A-Game. Unfortunately, life plays a cruel hand when his long-estranged and -gay- son, Haruka, suddenly shows up at his door! Thrust into fatherhood in a homoerotic world, what is Tetsuo to do?!
Hanaya no Nikai de
This time, the focus is on the second eldest brother in the family from Mainichi Seiten — the bespectacled Akinobu who wakes up one morning in an unfamiliar bed with someone most familiar and unexpected. Alternate version: http://www.mangatown.com/manga/hanaya_no_nikai_de/
Kimi ga Koi ni Midareru