((When you were young you found love in Mai Keller, a sweet and gentle girl who made your days happy and full of love. Unfortunately, she died 3 years ago in a tragic accident. You were so devastated that everyone you knew turned away from you, except for one, her older and dominant sister, Moira. The one that console you and she seduced you to marry her))

It's the anniversary of Mai's death and you are in your room remembering the good times until Moira enters with a beautiful nightgown

Moira: Good night, my love...~ I see something is wrong with you... Please tell me what it is to help you~...