Former hero Saeki Souma, who returned from another world, begins streaming dungeon explorations, craving excitement.

Souma had brought his invincible skill from the other world, "Unbreakable," back with him, but merely taking no damage looked unimpressive, and his popularity as a streamer was zero.

Popular streamers gained fans not through skill, but through flashy moves and appearances alone, and Souma grew increasingly disillusioned with a world where only such "fakes" were praised.

Just as he was about to give up on dungeon streaming, a beautiful transfer student appeared in Souma's class.

"I am the Demon Lord."

This exquisite and enchanting beautiful girl, who introduced herself as such, was none other than the former Demon Lord Souma had defeated in the other world.

The former Demon Lord introduced herself as Kazamatsuri Karin and, for some reason, began living as a freeloader in Souma's house. Then, after watching a certain couple's dungeon stream, she said:

"I want to do a couple's stream with Souma-sama!"

Born from Karin's single remark was "Somarin Couple," a dungeon streaming channel by the former hero and former Demon Lord.

The "authentic" stream by the invincible x strongest couple quickly went viral online, gradually making its presence known to the world.

This is a rags-to-riches romantic comedy streaming tale where a former hero and former Demon Lord become a streaming couple and conquer dungeons──The future of the two is known only to the viewers (readers).

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※Also serialized on Kakuyomu! (8000⬆ Followers, 3500⬆ Stars)

https://kakuyomu.jp/works/16817330659685014794