Main character loses a job and applies for an internet ad vacancy to work at a huge leisure park "Blue Seal" with multiple facilities including restaurant. There are many curious girls working around.
The main character's father suddenly gets remarried without noticing him, and he starts a new life with his father, a new mother and a younger sister, Suzu. But his new parents go on honeymoon for three months, and he is forced to work at his father's coffee shop until they come back. He is totally confused with his new life at first. But he meets various girls, falls in love and gradually starts to enjoy his life....
Kazuya was mistreated by his boss, and he was both physically and mentally exhausted. The only one who still helped him was his senpai at the workplace, Miori. He can keep going on because of her support. However before long, he quit the job upon her recommendation.
“It’s fine not to give it your all.”
With those words, it seemed like all the stress disappeared and he could just enjoy a simple life where she would take care of him all day long.