Tetsuya Ishigami feels that his life is an unsolvable mathematical problem.
Over forty years old, unmarried, teaching mathematics in a rural high school. He was once regarded as a mathematical genius, but now he is just a teacher who is marginalized by his colleagues and pressured by his director.
That evening, he put the rope on the beam.
The doorbell rang.
There was a woman standing outside the door, holding a box of red bean cakes in her hands. She said her name was Hanaoka Yasuko and she had just moved next door.
The red bean cake is served warm. He took a bite. The crust was soft and thin, and the sweetness of the red beans melted on his tongue. At that moment, he suddenly thought: try again.
Later he learned that Jingzi had an ex-husband who was addicted to gambling and had a past shrouded in fear. Her thin shoulders supported a home, but she never complained.
He decided to protect her.
In the only way he's good at.
Not asking for anything in return, I just hope she can eat red bean cakes without any burden.
But he didn't know that the gears of fate had already started turning before they met.
Concept: A little tenderness is enough to rewrite a person's life.