Noriko Kozuru

Shun is a transfer student who can't seem to adjust to his new class and falls into mild depression. However, one day he meets some fellow students by chance in front of a creepy Western-style mansion called the "Jailhouse" which is rumored to be home to a hideous blue monster. Soon, the group of six students, led by Shun and Anna, become trapped inside and desperately attempt to escape before the monster finds them.

The love of four high school students who get involved in a complicated way. A sweet and painful school love story.

Through a coincidence Tozaki runs into Kurata, his first crush from high school. They begin a relationship, but Kurata's jealousy starts causing problems.

A clueless romance novelist strikes a daring deal with a stoic banker for “research,” only to find their secret arrangement turning into real love.