Jun is so much mature than he appears.. that was one hell load of secrets to keep in so many years.. those evil men.. hope karma will come to play and they will pay back what they did to Sho and Jun.. in the end both brothers were protecting each other as they know they have only each other as strength (before they meet Aiba and others)..
Oooooo and one more reason why i said Jun is more mature is because he is the one who take the first step in his relationship with Nino.. yoohoo.. go Matsumiya.. so they will have their first time.. hehe
Thank you for the latest chapter! :)