A Japanese international student was assigned to me as a "buddy" how can I ruin this yellow Neighbor

I was thinking the most neurodivergent BS I can pull is adressing him with "san" and telling him how much I love anime but then there is a chance he is one of these types of nerds too and he thinks he found a soulmate (well I am neurodivergent but in a mischievous way). !germs whats the move here? Crackden tour in Ludwigshafen? Nighttrip with the RB 67 to Frankfurt Main HBF? Kick him down the ledge of the Heidelberg castle? It could be so shrimple lads.