Inside, I really hate Ono-sensei, even though I try to reason like "Oh well they're not BLOOD brothers" "Well he's his brother, not only a teacher" but on both levels, it's just wrong. He's an adult, he's a teacher in love with a student, he's A BROTHER IN LOVE WITH HIS BROTHER. All in all, it's not ok. >.> I ship the main CANON ship. But that's just my opinion.
All what u said is right, and me to I ship the main ship but It's just that he's handsome and kind :v
S a m e
He seems like a bit of a pushover, and even though
1. He's his (non-biological) brother
2. A teacher
3. Significantly older
He still gets acts on his jealousy and is honestly quite creepy in a way.
I have a crush on Ono-sensei ;-; (╯°Д °)╯╧╧