Beautiful Saintess, Your Skin Belongs to Me

[Body-hopping and substitution, dark fiction, Earth technology war against another world's fantasy, awakened skills, empress, invincible flow, feminine boy, multi-civilization world]

Ten thousand people transmigrated together into another world, and I awakened the most useless invention ability.

Yet my brother, whom I had protected since childhood, obtained the bizarre "substitution" talent, able to strip beautiful women of their skin and use it for himself.

When he put on the Imperial Saintess's skin and smiled softly, I finally realized—

The youth I needed to protect had already transformed into a ruthless Great Emperor stirring up the winds and clouds.

"Don't be afraid," she said, gently stroking my face and speaking like a yandere, "once I suppress this world, you will never be able to leave me."

Later she fused with the skins of countless geniuses and stood atop the mountain of corpses and sea of blood to ascend as Great Emperor.

All the immortals and demons in the world bowed their heads, and she only reached out to me:

"As promised, I'll give you half this empire."