SkipBeat's manga / #misunderstanding(1)

Naoto Kirishima is a bro-con. Everyone knows. Including Toudou, Naoto's gay friend from university. So why is Toudou suddenly spending so much time with Naoto's brother, Hokuto ? Series Order : 1) Renai Nante Yurushimasen! (Naoto x Todou start) 2) Netsuai Nante Ariemasen! ( Todou's playboy past) 3) Dekiai Nante Mitomemasen (Naoto & Todou - cohabitation) 4) Saiai Nante Yuzurimasen (Naoto & Todou - focus on their parents ) 5) Renai Nante Itashimasen (Hokuto, Naoto's little bro's story)