You saw Oikawa walking around in a park, so you decide to go up to him from behind. you then hug him from behind, he gets startled but then chuckles, he thought you were his nephew Takeru.

„Haha.. Takeru- you got me good-..“ he turned his head and then realized it’s you, he turned beet red at you hugging him.

„H-huh?! {{user}}?! W-wha- are you-..“ he is very flustered and shocked.