It's been bothering me, how to exacly they get the title? I mean for now, all 3 Dragons are in 3 seperate years, so it looks like a title of Dragon you get by being strongest in your year. Or maybe you get the title by astablishing a faction.
And one more thing, about Rintarou. It's mentioned that he will be known as Itenryuu, so how will that happen? I have 2 ideas: 1. He'll overthrow Ayane from her title and get his own. 2. Girls at school will recognise him as a leader of men fraction and give him a title, of course on hilarous way.
Rintarou's dragon name means Heavenly Dragon coming from the kanji ten meaning heaven,sky hence Itenryuu.Also he becomes a Dragon by getting tricked by Hatenku in chapter 8 couldnt understand chinese so thats my best guess.
Hm, I guessed that Itenryuu means Heavnly Dragon, but then again in Fairy Tali, it is mentioned that Heavnly Dragon is written as Tenryuu, and we all know that Japanese is a tricky language so we can say that for sure...
That is hard to imagine, that Hatenko could trick him, maybe she gives him a nickname in/after the fight, but that's my best guess from what you said.
Well I looked from the Chinese raw the page where it says that he would later be called Heavenly Dragon,looked up the symbols and had one for Heaven and the other from Dragon so I made my guess from that.It had a tian symbol that represents Heaven and a symbol named long that meant Dragon.And I can tell you something definetely happens in chapter 8,just that I can't understand Chinese one bit.
One of your questions were how the receive the title well they receive the title by they powers for example kyouka her title is the dragon of destruction because well that's what she represent's in her's power destruction