Kelvin forces Efil to take two specific skills: Double Skill Points and Double Experience Gain . This is a "late-game" build—she starts weaker but will eventually outscale almost any other character.
Efil’s curse was actually a high-level fire-based seal. Kelvin’s ability to remove it so easily is another hint at just how broken his "Summoner" rank and Mana pool are. Kuro no Shoukanshi Episode 3
Kelvin purchases her and immediately uses his MP (Mana Points) to heal her curse, revealing his kind but pragmatic nature. He then begins training her in archery and fire magic. ⚔️ Combat & Mechanics Guide Kelvin forces Efil to take two specific skills:
Unlike many Isekai where stats are automatic, Kelvin allows Efil to choose her own auxiliary skills (like Archery and Stealth) to encourage her independence. Kelvin’s ability to remove it so easily is
Kelvin visits a slave market to find a companion who can handle chores and assist in combat. He meets Efil , a Half-Elf with a "Cursed" status (a permanent burn on her back).
Whether you're looking for a plot refresher or a breakdown of the RPG-style mechanics introduced in Episode 3: "A Secret Shared with the Guild and a Slave Girl ," 📺 Episode 3 Recap
Check out the detailed stats for Efil and Kelvin on the Black Summoner Wiki.