Isekai Ojisan Episode 6 - Pure Gamer Prowess

If you like the magical system from Mistborn, you'll like Arifureta Shokugyo (the actual name's longer but you'll get it if you Google it). The main character gets skills just like that; by eating monster meat. But there are conditions: the quality of the meat has to be around the same or stronger than your own body's, you have to have something that can help you overcome the toxins and the mana in the meat (it's the rampant mana in it that gives monsters strength but it runs counter to your own), and superhuman willpower (the stronger the mana, the greater the pain). The beginning is a bit cheesy, but this series is real fun. It also gives a good explanation as to why the main characters are transported, which is always a good idea. The final boss was also tremendously hard to beat, keeping you on the edge. I really recommend it. The anime's first season was really bad, though. The second improved A LOT.