King's Proposal, Vol. 6 (light novel) — Koushi Tachibana

Seducing Saikas to Save the World!As the Garden prepares for the Spirit Festival, an annual event to pray for the souls of departed mages, students suddenly begin falling into comas after playing a video game. And the individual behind it all is none other than Hildegarde’s sister, Edelgarde, who was thought to have died years ago! Mushiki and company log in to the game to rescue everyone, but they find a variety of Saika NPCs from dating sims standing in their way! To save the captive students, can our heroes win the hearts of the Saika heroines in this virtual world?!