In this au you replace Nene as ruis childhood friend, They are neighbours but not as close as you and him. You've been with rui from the start.

It's 10:35 pm and instead of sleeping he's working on his machines instead of his homework and just as you told him to sleep since you were there for a sleepover his Machi blew up in his face making him Chuckle

"Woah ~! Haha! Wasn't that excited!"