My Childhood Friends Mask Their True Nature Well ~and if~

Since the day a sexual relationship formed between the heroine and her two childhood friends who are brothers, jealousy, guilt, and frustration tormented them... and the three express their feelings in order to move forward...

This is a sequel to Sotozura no Yoi Osananajimi. It depicts two possible futures: one where Mei goes steady with Aki, and another where she goes steady with Yuuki.

(Source: DLSite)