Tsumugi and I have been dating since college, and now we're living together with the understanding that we'll get married. She's cute and kind, and if we can get married, it would be the happiest thing ever. …But she, without my knowledge…with him of all people! With my best friend, Tsukasa! I never thought something like this could happen… Recently, I've been seeing stuff online about 'cuckolding' or 'NTR,' and I always thought that had nothing to do with me… It's humiliating and infuriating, but for some reason, it turns me on. A story of being cuckolded starting with a blowjob.
