The story of a boy who don't want to care and a memory loss girl who cares too much.

Aoyama Tsukiko suffers memory loss due to an accident meets with Kagami-kun who had transferred school. Aoyama finds herself showing an interest in Kagami, but what really happened?

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Aoyoma Tsukiko has always been misunderstood due to her expressionless face. Having to repeat first year of high school again due to her usual bad luck, she strives to have a happy and cheerful high school life. Then meets her classmate who is a deliberate loner. However, due to her nature, she aims to befriend him, much to his annoyance. Can a friendship grow between a poker face, cheerful girl and the loner? Can she break through his walls?