Spirited Busty Elf Marked with Pleasure Runes and Cuckolded

A fantasy RPG set in a world of swords and magic. After the protagonist, the elf Til, and the middle-aged mage Fulio defeat the Demon King and his army, the protagonist and Til become lovers. However, Til is mysteriously marked with a lascivious seal in a town they visit, causing her to gradually succumb to pleasure despite her strong will. Three men—the burly Boss Goblin (who commands goblins), Fulio (a former ally), and Casper (a tentacle-human who once fought Til)—appear and begin to seduce her. The protagonist must search for Til across Nines Star Town, uncovering events and discovering her fate. The game features multiple endings: while the story progresses toward her corruption, there is also a route where the protagonist and Til remain together. The game contains 19 base erotic CGs.