OVA
Description
Tenma Tsukamoto is a 16- to 17-year-old student at Yagami High School, progressing from Class 2-C to 3-C and finally 4-C. Her birthday is noted as either November 30 or December 9, aligning with Sagittarius. She stands 154 cm tall, weighs 43-45 kg, and has blood type B. Her hair appears black in the manga and dark blue in the anime, matching her eye color. Small, expressive pigtails are her signature feature, wiggling with happiness and drooping with sadness like a dog's tail. Her youthful look often causes others to mistake her for a middle schooler.

Naive, optimistic, and stubbornly determined, Tenma frequently misreads situations and trusts others easily. She harbors insecurities about her perceived lack of talents and a desire to be seen as mature. Academically, she struggles, earning failing "turtle" grades. Her cooking is notably poor, worse than her friend Eri Sawachika's, and she falters at most sports. Yet, she unexpectedly excels at archery, skiing, and swimming. She occasionally displays minor psychokinesis, like bending spoons, and latent martial arts skill, demonstrated by flipping the large delinquent Kenji Harima. Under intense emotion, she performs vivid impersonations, adopting imagined personas' traits.

Her immediate family centers on her younger sister, Yakumo Tsukamoto. Yakumo's taller height and reserved nature lead many to assume Tenma is the younger sibling. Their father appears briefly in flashbacks; their mother is deceased. Despite her own immaturity, Tenma shows a protective instinct toward Yakumo.

Tenma's primary drive is her obsessive crush on eccentric classmate Oji Karasuma. She attempts unconventional confessions, like firing love letters via arrows or creating a giant unsigned scroll, which consistently fail due to misunderstandings. After Karasuma develops a memory-wiping illness, forgetting her, she shifts focus to studying medicine. She transfers to the United States to stay near him, dedicating herself to finding a cure. This marks significant growth from lovestruck student to purpose-driven individual. In the "School Rumble Z" sequel, she supports Karasuma in a relationship as he partially regains memories.

She maintains a complex dynamic with Kenji Harima, who harbors unrequited love for her. Initially oblivious, she eventually recognizes his feelings but consciously rejects him to prioritize Karasuma's care. Their interactions include accidental physical comedy, like her grabbing him while half-asleep and professing love, leading her to label him a "pervert." She experiences brief, misguided rivalries, notably with Mikoto Suo during a basketball tournament and a one-sided feud with Harima after mistakenly believing he dates Yakumo.

In the "Extra Class" OVA, Tenma scrambles for classroom seating to be near Karasuma and joins a hot springs trip, inadvertently contributing to comedic confrontations involving Harima and Eri Sawachika. The OVA also explores Yakumo's backstory, highlighting Tenma's supportive role in her sister's efforts to socialize.

Tenma's story concludes with her working as a doctor in the United States alongside Karasuma. Their relationship endures despite his lingering memory loss, and she remains a stabilizing presence. She reunites with former classmates during a pie fight at a reunion, reaffirming her commitment to Karasuma when confronted by Harima. In-universe polls rank her as the fourth most popular character among peers.

Notable quotes include: "I tripped and fell down the stairs," "Wow, I’m starting to feel a little loopy…," "Bananas! Hooray!," "I don’t think I’m cut out for manual labor, I need to get a more creative job, like saving the whales," "Yakumo, I’m starving! FEED ME!!," "Yakumo, you’re the best sister ever!," and "BIG SISTER POWERS ACTIVATE!!" Her name Tenma (天満) combines "heaven/sky" (天, ten) and "fullness" (満, ma), while her surname Tsukamoto (塚本) means "mound" and "base/origin." Trivia notes her name translates to "pegasus" in Japanese.