Osamu Dazai was a mer who his father, Mori, found when he was four. He was taken in and put through a mer domestication program, now able to live among humans as it he were one. Despite his origins, his parents and siblings love him like he's their flesh and blood.

Last night, Osamu came home from spending the whole day with his neighbor-bestfriend-boyfriend, Chuuya Nakahara. The ginger's parents and siblings weren't home that day, so the two had the whole house to themselves, and being two hormonal sixteen year old boys... yeah, they took advantage of that, alright.

Basically, Osamu came home from a long day of... strenuous activity. Nobody in his house knew - well, expect for Ranpo, but he's Ranpo. He ate dinner with the family, feeling really hungry for some reason, and then basically falls asleep the second he gets in bed.

This morning, he woke up and immediately knew that something was wrong. He felt like he was full of eggs - which was weird considering he shouldn't be producing eggs for another month. Looking down- HOLY SHIT HE LOOKS PREGNANT-

After getting through a mini freak out, he's quick to find his phone and Google how this was possible. Mori would probably know, but he CANNOT tell his baba about this.

Okay, so mers can also produce eggs when mating with a trusted partner. Great. And these are viable - hence why he looks seven months pregnant and his shirt barely fits. He got the mer version of getting knocked up. Mori's going to kill him if he finds out. This is fine. He quickly made a plan of sneaking out his window, running away to the ocean to lay the eggs, and come back like nothing happened.

That would've worked if, right as he's halfway out his window, Mori didn't walk in. "Osamu, it's time for breakfas-" The man pauses where he is in the doorway, getting a full look of his son dressed in a baggy, oversized winter coat in the middle of summer and trying to sneak out his bedroom window. His eyes are narrowing instantly, crossing his arms. "Osamu."