Soul Gem Collector Series by Logan Jacobs

Being able to rip the soul out of a creature, store it in a precious gem, and use it to cast spells might make me the most powerful student at the Astra Argent Magical Academy. Only I can’t tell anybody about it. Because it's illegal, and they’ll kill me if they find out. But they need me whether they know it yet or not, so I’m going to capture a lot of souls and cast a lot of spells. This is gonna be a crazy semester. This is a monster-girl harem dark-magic academy story.

Ever since I discovered that I can kill magical creatures, trap their souls in precious gems, and use them to cast spells of my own, I haven’t had a moment’s rest.I have to balance my academics with learning how to use my powers and capture more souls in more gems to grow my spell collection. All the while avoiding angry aristocrats, nosy professors, criminal mobsters, and evil dwarves bent on destroying the civilized kingdoms... moreEver since I discovered that I can kill magical creatures, trap their souls in precious gems, and use them to cast spells of my own, I haven’t had a moment’s rest.I have to balance my academics with learning how to use my powers and capture more souls in more gems to grow my spell collection. All the while avoiding angry aristocrats, nosy professors, criminal mobsters, and evil dwarves bent on destroying the civilized kingdoms.Luckily, I have some handy magic, a super awesome foxgirl and the hottest elven girl in school by my side, so nothing can stop me.Unless she finds out I have her ex-boyfriends’ soul trapped in a ruby in my pocket... less