就读于私立湾田高等学校的平凡高二男生濑户一贵，获得了和单恋的同学苇月伊织一起担任迎新生派对实行委员的机会，两人关系慢慢融洽起来，一贵的青梅竹马秋叶季子却突然出现了。

秋叶季子的出现使一贵和伊治之间仿佛又陌生了一点，而马上就是新生派对，所以一贵就邀请季子来学校，但直到派对结束都没有出现季子的身影，预感什么不对的一贵在派对结束后回到家才发现季子离开并自己租了一间公寓，之后在陪季子买空调的时候中了去伊豆的两人的旅行券，但在季子的要求和基友的助攻和伊织一起“两个人”去往伊豆。但实际上是季子等人对一贵的恶作剧，因此四人一同来到了伊豆，晚上，四人各自说完鬼故事之后基友提议去试胆，而在试胆的过程中寺谷和一贵分开并先后对季子和伊织表白。

一起旅行让一贵和伊织关系更加密切。然而，在一贵得知一些关于伊织的惊人消息后始终难以释怀。

和班主任结伴旅行导致一贵因为没法和伊织见面而焦虑不已，事情在他们回到酒店后却迎来了转机。

Ichitaka's feelings waver as his interest in Itsuki grows stronger, but will her admiration for someone else be too much for Ichitaka to handle?

A heartbroken Ichitaka faces the arrival of the new school year alone, but could this year's orientation party be his chance to mend old ties?

Izumi's never-ending advances and Ichitaka's constant blunders cause trouble between him and Iori. Will he ever make things right with her again?

Ichitaka finally gets what he wants, but will he chicken out and cause it to all end before it's even started?

With high school coming to an end, will things finally go their way, or will Iori's ventures as a model create space between her and Ichitaka?

While moving, Ichitaka comes across old photos of time spent with Iori during high school, but will he ever be able to move past old memories?

Ichitaka disregards her manager's warnings and finally sees Iori, but will their meeting ignite old flames or leave them further apart than ever?

A familiar face rears his ugly head in Iori's life, but will Ichitaka be able to protect her as he did in high school?