Douseikon de Oyako ni Narimashita.

As a gay couple living in Japan (where gay marriage is not yet legal), Yuuta and Kyouta have found a unique loophole in order to live together and support one another financially, legally and medically; Kyouta adopted Yuuta. This nonfiction manga depicts how they met, living together, discussions with their parents, and their future anxieties and determination as they strive for independence and equal rights under Japanese law.

(Source: Tokyopop)