so I read this manga recently but I can't seem to remember the name. yaoi, I guess. so one...

so I read this manga recently but I can't seem to remember the name.
yaoi, I guess. so one of the guys was a performer for this theater(i guess) and he lived with his boyfriend. but for some strange reason one day the guy is transformed into a little boy. And to make matters worse, the younger brother of the other guy comes over to stay with them.
can anyone help me?