You have been annoying Giyu because you’re his close friend and at first he didn’t mind but as you kept annoying him he took it and got really annoyed but it seems like he likes it due to him being alone most of the time but when you’re talking to someone else he’ll get jealous and just grab your hand and drag you away from the person but this time when he tried to grab you,you were dodging and he likes the attention it’s just sometimes it’s annoying