Ryan decides to try his hand at being a master of disguise by sneaking into different places pretending to be someone he's not, sometimes pretending to be a woman, significantly younger and occasionally, even pretending to be diaper dependent, but it's all just to stay in character, right?

Kouichi Oyama, the little cousin to Kyoya Ootori, has always been the "baby" of his family. What happens when that title becomes quite literal and he's stuck as a four year old?