Incubus-ui Seonsaengnim

Yuri, who was returning home after working part-time as a tutor, ends up helping someone who has collapsed on the street and ends up drifting away somewhere. When she comes to, she sees three incubi requesting sex lessons in front of her…

(Source: Ridibooks, translated)

Note: Part of Metatoon's Inoe Danpyeonseon (인외 단편선) Collection.