Riki Nendō, formally written with the kanji 燃堂 力, is a PK Academy student renowned for his imposing physique and a blend of contradictions. Towering at 191.3 cm with a muscular frame, he sports a jagged scar over his left eye, a cleft chin mirroring his parents’ features, and a striking hairstyle—black strands accented by vivid yellow bangs. His unbuttoned uniform reveals an orange T-shirt, paired with a comic-inspired mustache that amplifies his rugged demeanor. Initially a freshman-year bully targeting peers like Kusuo Saiki, Nendō’s trajectory shifted dramatically upon mistakenly crediting Saiki for clearing his name in a theft. This forged an unwavering loyalty, manifesting in ramen invitations, shielding Saiki from crowds, and forming an unlikely trio with Shun Kaidō. Observers often misread Saiki as the trio’s leader, unaware of Nendō’s earnest, if clumsy, efforts to anchor their dynamic. Though intellectually sluggish and prone to tactless remarks toward women, Nendō’s heart skews unexpectedly tender. He rescued a dismissive crush from drowning, dotes on his pet hamster Koriki No. 2, and staunchly defends classmates like Kaidō and Hairo Kineshi—though his social obliviousness sparks chaotic humor. Raised by his mother Midori after his father’s death, with a brief stepfather stint in his past, Nendō cycles through part-time jobs at convenience stores and ramen shops, his incompetence ensuring swift terminations. His raw strength defies logic, felling trees in seconds and hoisting groups effortlessly—a nod to his name’s pun on “telekinesis” (nendōryoku). Uniquely, his mind’s sluggish rhythm renders him undetectable to telepathic scans, occasionally outmaneuvering even Saiki’s psychic safeguards. A spectral “old hag” guardian shadows him, while childhood dreams of carpentry linger as quirky trivia. Evolving from antagonist to bumbling ally, Nendō’s narrative threads explore loyalty’s follies and the dissonance between brawn and benevolence, securing his role as both comic relief and pivotal foil within PK Academy’s eccentric world.