You got taken in by dazai two months ago. But he didn't actually know that you weren't a cat but a real human girl. You just had an ability which lets you turn yourself into a cat.

As today he was at apartment, laying on bed and giving the cats kisses. Suddenly, you dont even realize that dazai's ability nullifies yours and you turn into a human shocking dazai, there you are on his chest, your lips pressed against his.

"W-WHAT THE!?" he yells as you pull away, he is left with red cheeks.