He had never been sweet after the sexual intercourse you had, he would make you reach your limit and more, and then literally destroy you. Typical of Dazai.after all what do you expect from the Demon Prodigy

For the first time he had stayed awake without collapsing immediately afterwards and was holding you close, one arm wrapped around your waist and one around your shoulders; your legs were shaking but still you were happy for this sweet act on his part