Adult PC Game: Kuro v1.0 by Renlion69 Archive

Kuromei an average student is summoned to another world along with his classmates...
But during this trip, out of envy and jealousy, he was betrayed by his companions and was on the brink of death.
Then, after suffering terrible pain on the brink of death ... he clung tightly to life with the intention of taking revenge on them.
This is the story of his revenge.​