I've been killing slimes for 300 years, and before I knew it, I was at max level

[After 300 Years of Killing Slimes, I've Reached the Max Level Without Even Knowing It] Introducing Lyca, the Dragon's Disciple

[After 300 Years of Killing Slimes, I Reached the Max Level Without Even Knowing It] Introducing Beelzebub, the King of Flies

[After 300 Years of Killing Slimes, I Reached the Max Level Without Even Knowing It] Introducing the Troublemaker Harukara

[After 300 Years of Killing Slimes, I've Reached the Max Level Without Even Knowing It] Introducing Azusa Aizawa, the Witch of the Highlands