Ougo Mitsunaga wa Namagoroshi ga Tsurai

Mitsunaga has made a promise: when he turns eighteen, he will grant a wish to his cute girlfriend, Karen. To reach that moment, he endures layer after layer of restraint. Though he is taciturn and obstinate, his sexual desire is a little stronger than that of an average person, so it is only natural for him to expect something more. Yet on the commemorative day that should have been celebrated, something unexpected occurs. Karen is precious to him, so he refuses to lay a hand on her. But because he likes her, he wants to touch her even more. Caught between his feelings and his self-control, this grown man finds himself in a troubled, pure love story.