Survival in the Dorm: Starting by Crawling into the School Beauty's Bed

When a sudden apocalypse traps electrician Li An in the female dormitory 503, he is bound to dance department beauty Lin Qian in the same bed, awakening the hidden talent [Yang Sword Immortal]! Lin Qian simultaneously unlocks the Yin Sword Immortal talent, and her roommates gather as a light angel healer, telekinetic powerhouse, and ultimate shield maiden, forming an elite survival team. Amidst zombies and Cthulhu-esque aberrations, Li An ruthlessly dominates with the invincible combat power of yin-yang dual cultivation, harvesting points to upgrade the dorm. He protects only the stunning beauties around him, crushing all challenges and crises, and ascends to the pinnacle of survival! — Description from novelcodex.org