Marriage in Ikebukuro

I watched as Izaya came skipping back into my room with Yuki following far behind him. That guy has serious issues. What 23 year old would you see skipping down anywhere? I really have no idea what Yuki saw in this person, but oh well. You can't help who you fall for. I think that is how the saying goes. She fell for him, she knows of it, he knows of it, he feels the same way, so I guess "why" doesn't matter.

"What was the commotion all about?" I asked the both of them.