
I'm just wondering if he's rich so why he went around like that? I mean, he could get his those sparkling 'toys' from home so why he didn't stay at his house but wandering around the house of random people?

i've noticed in a lot of manga or even some korean dramas when people are rich they will always have one of two personalities. 1)where they are stuck up to the point of being almost evil, but the women love them because they are so handsom and untouchable. or 2) the rich person doesnt care at all about being rich and will say that their parents are rich not them. so they work or spoil their lover and act like happy puppies all the time

maybe he doesn't feel comfortable staying there
or he was kicked out

Possible he only said he doesn't have anywhere to sleep, because he wanted to stay close to the uke.

Senpai, didnt you feel angry at that random kid? Your crush was kissed by random kid, for love sake!!!
Well, I was hoping the senpai will be angry. Maybe kiss Qin too...

Yeah he was being considerate and sweet. In the context, it was obvious that the random guy kissed someone just to spite his father and that it was not the one fault of the other guy. If I was upperclassman I would be shocked and maybe even a little angry at the other guy who kissed my crush without asking just to prove a point.... But there was nothing romantic nor intimate in that kiss..
Haruhiko really needs his own story. Junjou sadness, maybe? He needs kind hearted people to heal his heart and mind.
I was thinking the same thing
I was thinking he needs to find his own person to love.