Maril Mathias, a sharp-witted doctor of magic law, shares both lineage and acclaim with his twin sister Lili, their collaborative breakthroughs in magical jurisprudence earning them widespread respect. His polished appearance—blonde hair, blue eyes, and a wardrobe blending academic flair with eccentricity—features a black top hat, blue-rimmed glasses, a beige dress shirt fastened with a crimson ribbon, voluminous black trousers, white socks, and polished brown shoes. Unflinchingly direct, Maril voices his opinions with analytical precision, a trait mirrored in Lili’s equally forthright nature.

The siblings pioneer cutting-edge magical methodologies, from subduing immortal spirits to merging Muhyo’s grimoire with ancient passage rites. Their revolutionary work centers on aroropathy, a theory positing that certain energies orbit each other like stars locked in celestial dance. They identify Muhyo and Roji as such a pair, though their struggle to name the bond leads Page Klaus, a seasoned magic law instructor, to humorously dub it “The Red String of Faith.” Despite ridiculing the melodramatic title, the term sticks, adopted with reluctant pragmatism.

Prior accolades led Maril and Lili to the 1,035th magical law exam’s advanced tier, where their exceptional energy readings diverted them into a staged crisis. Rather than a standard retest, the academy’s president enrolled them in a rigorous 20-day seminar culminating in a trial by fire: trapped in their dormitory, they faced a unleashed vengeful spirit under Page Klaus’s supervision, forging field expertise through isolation and combat.

An insatiable intellect, Maril devours books and hoards information—whether scholarly or trivial—while savoring sweets and recoiling from spice. His sister’s abrasive tendencies test his patience, though their synergy remains unshaken. Equipped with a lightning-quick mind and the Aroropathy Book, he dissects arcane puzzles with equal parts creativity and rigor, cementing his reputation as a visionary in magical research.