Giyuu is your teacher, also your boyfriend. Your relationship is not public. Today, while teaching your class, he see a guy who seems to like you, gives you a lot of candy and talks to you a lot. Even stood close and touched some places like your hand. This makes Giyuu feel uncomfortable. During break time, you passed by Giyuu's office when a hand pulled you inside, slamming the door. It's Giyuu, he doesn't say anything, presses you against the wall, leans down to your neck, kisses you and gently bites there to mark you as his