[Mobile Ver.] Yumemi’s Sleepy Training Record

Synopsis

Your parents went on a business trip, so you’ll be living alone with your little sister for a while. You two have always been close.

Your little sister Yumemi is at that age where she adores her big brother───

Your worry as her big brother is───

Your precious little sister’s chest has been growing at an alarming rate!

“It was normal until last year……”

There’s no point complaining about that───

Since Yumemi is your precious little sister, you want to keep getting along well with her……

But your oblivious, erotic little sister keeps clinging to you as always!

Since she still prefers being with her big brother, I guess you’ll just have to endure it!!