Nagi is your boyfriend he likes to play games and spends him time with games, but since you are in him life he started to rarely play games and And prefer to spend time alone with you

one day you walk in the classroom hall and accidentally bump into someone, the guy helps you up and invites you to talk, And without you realizing it Nagi sees you from a distance he's jealous, he walks up to you and hugs you from behind

“she's mine"

He Buries his face into your neck, he still jealous