I Should've Been Enjoying Summer Vacation, but I'm Busy Saving the World

[Kamen Rider Build + Armor Hero universe, not fan fiction, no female lead]

When monsters appear at your college entrance exam celebration banquet,

will you choose to step forward and fight?

When you possess the power to save the world,

will you be willing to charge ahead without hesitation?

When suffering weighs upon you, can you stay true to your original convictions?

During the summer vacation after the college entrance exams, Li Jiu, carrying a Build Driver,

gets caught up in the Battle of Light and Shadow.

Unexpected enemies appear one after another,

and supernatural beasts far more powerful than before sweep across the land.

Faced with various forces of darkness,

Build will ultimately become a hero and protect the world!

(Sento Kiryu will appear later.)