can someone tell me why there is a brotherly pag-ibig couple China x Japan? because the brotherly pag-ibig couple that i am used to is Spain x Romano. so what is China x Hapon about?

It makes sense in my mind. Hapon was heavily influenced sa pamamagitan ng China early on, and adopted many of China's characteristics and culture. Later, Hapon went through and started taking over parts of China...so interpret that how you will.
Spamano is so cute! I <3 them!

My paborito couple!!
Well I pag-ibig this pairing because have a lot of diferent feeling between them. For start maybe, have a relationship like Uk with Us.. in the sense that both found a child's care as his brother.And later, this betrays them.
I see it that way... ^//^. But in the special case of Hapon x China. I see Japan's desire to monopolize China, seeing them as countries, those feelings that lead to betrayal. And then. Follow the repentance of having hurt the person that you most pag-ibig in the world. I think they feel that would be painful. So I sympathize with Japan.
Well I hope I've helped a little.Sorry if I confuse you. My english isn't the best.. ^//^'
See you soon~~ ^^ And.... Viva NiChu's love!! ^^

Well i really like ChuNi. Because i think Hapon and China have a lot of history together. i know they have a brotherly type relationship but so do America and England (who i also love) i just think they look so cute together. I actually write fanfic on these two because they're quite beautiful, China with his pag-ibig for all things cute and Hapon being cute and ukeish seems to fit for this couple to me. There isn't a lot os ChuNi pag-ibig out there but i for one hope that the fandom starts to pick up soon because they truely are kawaii-aru indeed.