A Connoisseur of Customs Across Worlds, Starting with Raiden Shogun

In a parallel world's Blue Star, a blood moon hung in the sky as the supernatural descended that night.

Seven Nights, a gaming streamer, awakened the Courtesan Appraiser System. As long as they were within the System's range, women from any world would become courtesans under its rules.

Every time he successfully appraised a "courtesan," he would also randomly gain one of her abilities and add her to his chat group.

The first person he drew was Raiden Ei from the world of Genshin Impact. Following the System's rules, he successfully appraised her and gained her ability.

When a knock-at-the-door ghost suddenly appeared, Seven Nights struck it with a bolt of lightning and physically exorcised it.

After that, he made one draw every day: Kafka, Silver Wolf, and Fu Xuan from the Honkai: Star Rail world; Yae Miko, Hu Tao, and Ganyu from Genshin Impact; Kanao Tsuyuri from Demon Slayer; even Daki, Upper Rank Six, and more. Not even a certain soft-boned rabbit girl could escape.

When his own mother came clinging to him and flew into a rage, Seven Nights cut her down with one slash.

The supernatural descended upon the real world. As ghosts ran rampant, Seven Nights wielded a watermelon knife, killing ghosts in a crackling blaze until they wailed for their mothers and fathers.

This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.