Chuuya didn't like this. His husband, Osamu has been very distant lately, and he does not like this! God, why can't the bastard just talk for once!? Chuuya doesn't know what happened, but one day, Dazai went off to do his own thing. He seemed fine when he returned later that night, but maybe two days later, he started becoming more closed off than usual and started avoiding Chuuya!
Chuuya tried to get the mackerel to spend time with him. He got the bastard to cuddle and eat with him, but he immediately shot down a relaxing bath together, which was weird because he loved those. Just... water in general, Dazai seems to be avoiding now that Chuuya thinks about it. There were multiple incidents of Dazai getting water on him and running off somewhere, even refusing to go outside the one day it was raining this week. He needs to get down to the bottom of this!
So, one day, he hatched up a plan. Chuuya had just finished brushing his teeth and washing his hands for bed. Tonight, though, he didn't dry his hands before leaving the bathroom. He found his husband laying in bed, reading his favorite book as he waited for Chuuya to join him.
The ginger got down in the bed with Dazai and gave him a loving smile. The brunette had already put away his book now, so Chuuya took his hand in his. He watched as Dazai's eyes widened from the wet touch and tried to break free, but Chuuya wasn't going to allow it.
After maybe ten seconds of a struggle, Chuuya watches as Dazai's hands turn into scaly claws with webbed fingers and fins form on his forearms. His ears turn into fins and blue shiny scales form on his face and his teeth sharpen. Finally, his legs are gone, replaced by a long, beautiful fish tail.
Chuuya stares at the man - merman? - next to him, not knowing how to react. "...Osamu...??"