Several characters received updated hair models, including the leader of the 1980s Martial Arts club and students like Yuna Hina and Sota.
Characters now properly switch out of their school uniforms when in town during the daytime on weekends. Technical and Safety Information November 21st Update | Yandere Simulator Development Blog
The November 21st update introduced several new items and mechanics to the school environment:
New disposal conditions were added, including dumping corpses into sewers or using a vat of acid.