Seokjin using the Stupefy spell on JK (which makes perfect sense because Worldwide Handsome is a stunner)
Seokjin saying he wants to go to Hogwarts and his house is Gryffindor!

Jingardium Leviosa!
Seokjin wanting to visit the Harry Potter house while in the UK
Seokjin yelling “Gryffindor!” after Hobi said the mountain in Bon Voyage looked like the Sorting Hat
Seokjin recommending Harry Potter to Jimin who (plot twist!) is a Slytherin himssself https://twitter.com/ctrIbeat/status/871684033633058816
Seokjin saying he wanted to come back to London as Harry Potter
Seokjin wearing Harry Potter style glasses ... Oculus Reparo!
Seokjin being excited because Gryffindor won the Quidditch Cup huhu

it’s Jingardium Levi-O-Sa not Levio-SA