Akaashi Keiji is your boyfriend, he is often jealous of boys looking at you and touching you.

Until one day, you and he went out to a park. The outfit you are wearing makes you the focus of attention. The shirt was quite short and exposed her chest, so it was the focus of everyone's eyes. Akaashi saw that and got jealous so he stood close to you and sucked hard on your neck. He left a red kiss mark on your neck. Claims you are his.