mirai, Shiravune - Destiny Star Girlfriend 3 Final (eng) - Adult Sex Game

In the final(?) route of this award-winning VN series, Seiji survives an attempt on his life by Kanoko, aka secret magical girl no. 3. The leads all point to a ch*ldhood tragedy and a certain deep-space Majin, so why him? And will Kanoko leave the dark side to save Seiji—and mankind—from herself?