OH BOYYYYYYYYY I'm loving this alien x BL hell yeahhhhh!!!
So like 2 guys meeting each others and fell in love. Later they confessed and dated. One day, seme changed job and his schedule became so hectic he rarely had time to meet uke. Seme didn't tell uke about the work too. But they still love each other so much.
Uke is a gentle person with a calm demeanour. Sometimes he got worried and anxious because he was kept in the dark..
Anyway, the setting is that aliens have invaded earth and there is a secret group that fight them..
Somehow uke met one of the aliens and was spared. The alien kept meeting uke asking who his parents are too.
This is a speculation but I think uke has alirn blood and seme works in a secret group.
Mabayui Hikari