Slime Taoshite 300-nen S01

Azusa Aizawa, a corporate employee, suddenly dies from overwork and finds herself in front of an angel who allows her to live in a new world as an immortal witch, where she spends every day killing slime monsters for money in exchange for an eternal trip. However, the experience she gained from killing slimes over the centuries accumulates, and she accidentally discovers that her level has reached its maximum... Fearing that her excessive abilities will affect her work and return her to her previous stressful life, she decides to hide her power to maintain her peaceful life. Despite her efforts...