箱庭の学園/ Miniature Garden

"Miniature Garden is a Japanese mystery visual novel with multiple endings. Art by Korie Riko (Lump of Sugar)."

"In the woods not far from the city lies a school called the 'Miniature Garden.' In keeping with the school's name, an original 'Miniature Festival' is held there every three years. There’s a rumor that an unnatural death will befall someone on the night of the festival. This year, as the sun sets, Yasunari and four other students find themselves trapped alone in the school on the night of the festival. Is it just a mistake, or could the rumors be true?"