This is the first manga that seems pretty Legal to me eventhough it's seems not, the characters are good there is no rape or slutty main character that seduce everyone with his body (just mc tho), and the brother is pretty patience with his feeling he does'nt force it to his big brother (the shota one), as far as i read it seems good, I hope it will be better in next chapter....
Last read : Ch 5
Onii-chan Datte Amaetai Wake de