"Takeko", a teacher in her late 20s, ends up masturbating using a mysterious mushroom that grew in her room.
By chance, this ends up saving an unknown planet from an energy crisis!

A clicker/incremental game where you insert mushrooms into various holes, unlock skills to boost your power, and save the planet.

Takeko Matsu is a teacher.
Things are not going well for her—neither at work nor in her personal life—and on this day, too, she returns home alone to her empty, dreary apartment.
There, she notices a strange mushroom that has somehow sprouted from the floor.

Deeply intoxicated, Takeko inserts the mushroom into her own genitals and indulges in masturbation.
However, the true nature of that mushroom is an exploration pod sent from the distant planet "Shroom".

Suddenly, a mushroom-like alien from the planet Shroom appears in Takeko’s mind and introduces himself as Kinoshita.
He explains that Takeko’s contact with the mushroom-shaped pod generated a massive amount of energy.
Kinoshita pleads with Takeko to save the planet Shroom, which is suffering from an energy shortage.

While the Shroomians are grateful to Takeko, they keep turning to her for help in resolving the various problems that arise on their planet.
As she overcomes one difficult challenge after another, a sense of friendship and solidarity gradually blossoms between Takeko and the Shroomians.

Having driven off the invaders and become an instant hero, Takeko is encouraged to run for the position of "Cosmic President"—the leader of the Planetary Union.
But as Takeko works to build a track record to win over supporters, a crisis that threatens to destroy the entire planet is quietly closing in on the world of the Shroomians...