Koi Gokoro Gekokujou恋ゴコロ下克上 ; Koigokoro Gekokujou ; The Awakening Love by a Powerful Junior ; The Awakening Love of a Powerful Kid

From Shoujo Manga Maniac: 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?