Ryota Haruno's life is full of small miracles. It wasn't that he was a genius, wealthy, or had any extraordinary talents. Quite the contrary, he was just an ordinary high school student who didn't stand out in any way. However, there was one thing that made him different: his luck.

One time, Ryota woke up late for an important test. On his way to school, he got stuck in traffic. At that moment, he could only sigh in resignation, until suddenly a motorcycle passed next to him.

Luckily, a kind man offered Ryota a free ride for no apparent reason.

Ryota arrived at school just before the exam room doors closed.

"Luck... is always on my side," Ryota muttered at the time, not even realizing how absurd the incident was.

However, there was one area where his luck had never been tested: love. For Ryota, love was something complicated, out of his reach. He's too innocent to understand other people's feelings, let alone read the signs that often seem obvious to everyone but himself.

And this is where the story begins. Unbeknownst to him, his luck is about to take a huge turn in his life, bringing him together with five girls who, in their own ways, will rock his world.