What do you want in return for saving me...

On the continent of Rainica, there have long been Heroes—chosen ones who protect humanity.

As chosen humans, the Heroes eliminated threats with their power and were praised as heroes, securing not only military but also political positions.

However

In contrast to such Heroes, a few beings appeared who brought threats to the world.

Each one possessed extremely powerful strength, and their very existence was a threat to all humans.

Humans called them Legion Commanders.

The Legion Commanders used their innate powers to start wars, and as they fought against the Heroes for a long time, their generations changed along with the Heroes.

And

The worst, most malevolent, and strongest Legion Commander to be recorded in history appeared.

Legion Commander Yomi

With the appearance of one who displayed overwhelming power and cruelty compared to previous generations or other Legion Commanders, numerous Heroes risked their lives to battle Yomi, barely weakening him and forcing him to retreat.

Eighty years passed, and a new Hero, Rian, appeared.

His personality and private life were certainly far from what a Hero's should be, but his power, authority, and appearance were superior to past Heroes, enough to offset all of that.

Rian recruited many party members, and among them, there was one who clearly stood out.

Seira, Rian's maid and one of his party members.

With her beautiful appearance, voluptuous physique, and strong power despite being a maid, she drew the attention of all men, and Rian was no exception.

Seira suppressed her irritation as if she were used to it but exhausted by it.

Rian brushed off Seira's words and headed to a tavern.

On her way to Legion Commander Yomi's territory, Seira is caught in a surprise attack by numerous magical beasts and falls into a crisis.

Injured and collapsed on the ground, Seira sensed her death as she watched the magical beasts approaching her.

At that moment

He appeared before the fallen Seira's eyes.

Legion Commander Yomi

Yomi walked forward without a word and cut down the approaching magical beasts.

In less than a few minutes, all two hundred or so magical beasts were subjugated.

Seira painfully pulled herself up and leaned against a rock, looking at Yomi.

Legion Commander Yomi....

Why did you save me... What do you want in return for saving me...