
There are types of seme? Please elaborte ><

Oh sure... there's the shy seme, the tsundere seme, the bad-ass yakuza seme, the selfish seme, the S&M seme who is usually the Sadist, there are masochistic semes too, there is the cool company director/president seme and let's not forget the sweet, lovey-dovey seme. There are as many types of seme as there are breeds of dogs....or should I say cats (neko = uke).
Do you not read much yaoi? It (your question) seems odd because within this manga alone most of these types are depicted.

umm,can i ask? neko=uke,seme=??
well,i dont know,so i ask...hahaha

"in real life", no that's just Japanese slang. There's pitcher or the catcher, giving or receiving, or simply; top or bottom.
Asagi was.... as expected. You just don't mess with the uke that belongs to that type of seme.