A Prisoner in a World of Honkai

Mia, a young man who has gained the powers of the Seven Deadly Sins, arrives in the world of Honkai Impact 3rd.

He wants to take it easy and live a peaceful life in this world, but... such an ideal is bound to be a luxury here.

When his dream is shattered, he watches the girls struggle in agony as they fight the Honkai... and finally makes up his mind.

"I, Mia, will still be the captain of the Hyperion!"