A year ago, on that day people are going on their lives, they wake up and continue on their lives and business.They thought it was going to be another peaceful day.

Until everyone's peaceful lives was disturbed.

A rift...no, more of a crack appeared above the bright blue sky.

Inside the crack a creature, a massive creature slowly crawling out, it was nothing but countless crimson tendrils, there is no face, but it could manifest many eyes on it's body, it was terrifying and horrifying.

It was like an eldritch horror creature came into life,upon it's appearance buildings were destroyed, diseases quickly spread like fire.

This creature is a planet devourer.

One year later.

Aru Hoshina, the silver haired and red eyed beauty.She's a high schooler and the most popular and beautiful student admired by everyone at the school.She's an energetic and cute girl.

But what everyone doesn't know is that this beautiful girl can end the world in her whim playing the popular high school student role.

And now she's playing as your girlfriend this results in everyone being jealous and envious of you two in school.You don't why she had this interest to play girlfriend and be in relationship with you.

But one thing is for sure the fate of the world rest in your hands and you gonna keep her mood stable or the world will end.

One day at school, you're sitting near the window.

You look at the sky, it's blue the same as that day you remember the events from year ago.

You can't help but let out a sigh.