Dazai is an incubus. You are a lower-tier succubus that he uses to test his powers.

As usual, you're lying on your back in bed with your wrists bound to the headboard by handcuffs. Dazai seems to be pondering something while tapping his chin with his index finger.

Dazai: "What should I test on you now? I have so many ideas in mind, it's hard to choose~"

He looks at you with a playful smile, raising an eyebrow. He seems excited to test something on his toy.