I've Been Killing Slimes for 300 Years and Maxed Out My Level, Vol. 2 (manga)

The slime-slaying, max-leveled, immortal witch Azusa’s main goal in reincarnation is to live a laid-back life with her new family of four. But trouble comes knocking on her door when the elf Halkara arrives, seeking sanctuary from the demon Beelzebub...Will Azusa ever find peace?!