HOMA-009 You can't tell big brother, right? My weak girlfriend (little sister) was made to service him multiple times because my senior held her secret!

Umi, who spends her honeymoon days with her brother in secret from their parents. Their sweet secret relationship is ruined by a brutal rape! A close-knit brother and sister who secretly seek each other's bodies every night are torn apart by a man! Umi, the sister who was raped, cannot confess the truth to her beloved brother and keeps it bottled up inside. Her body is toyed with repeatedly, feeling sensitive against her will. Umi, who had almost given up, struggles and resists within the molestation to regain her honeymoon days with her brother!