Koi Gokoro Gekokujou

恋ゴコロ下克上

Minori's childhood friend, Shin, has always been a crybaby and even though he's considered the charming prince of the school, Shin is still a crybaby in disguise! Minori consider him no more than a little brother, but is Shin's crybaby character his real character? (Source: Shoujo Manga Maniac)