Manga by author Hiramoto Akira

Hachimitsu Private Academy was a revered and elite all-girls' boarding school on the outskirts of Tokyoonce upon a time. But with the new school year comes a revision to school policy: Boys are to be admitted into the student body for the first time ever. But on his first day at Hachimitsu, Kiyoshi Fujino discovers that he's one of only five boys enrolled at the school. Their numbers overwhelmed by the thousand girls in the student body, is it heaven or hell that awaits these five (un)fortunates?!Note: Was one of two winners of the Best General Manga award alongside Gurazeni at the 37th Kodansha Manga Award in 2013.

.On the outskirts of Tokyo stands Hachimitsu Private Academy, a storied all-girls boarding school for elite young women full of potential and good breeding. But as the new school year rolls around, one tradition is going out the window: For the first time in the school's long history, boys are being allowed to enroll. But on the first day of school, only five boys make the cut. Kiyoshi Fujino, one of the lucky few, is thrilled by this discovery, his heart leaping with joy at the thought of being surrounded by all those girls, day in and day out. But little does he know of the shocking fate that awaits him.(Source: Yen Press)

Ichiyoshi continues to work at a chocolate factory, always keeping in mind what is "best" for him. One Christmas night, on his way home, he finds a mysterious superball that rolls out of the darkness...