OVA
Description
Tōka Ryūmonbuchi attends Ryūmonbuchi High School as a second-year student and holds the vice-captain position in the mahjong club. She is the principal's daughter and cousin to Koromo Amae, distinguished by a prominent ahoge atop her head. Her eccentric, attention-seeking personality manifests through oujo-sama mannerisms, including a personal butler and maid. A fierce competitive drive fuels her rivalry with Nodoka Haramura, whom she challenges to decide the "true idol," recognizing Nodoka’s online alias "Nodocchi" during matches. Interactions with Nodoka occasionally elicit physical pleasure, disrupting Tōka’s ladylike facade. Despite snobbish tendencies, she shows genuine concern for others, particularly Koromo, assuming a motherly role while rejecting explicit acknowledgment.
Her digital mahjong style prioritizes careful play for small, consistent wins. She excels in "cold" conditions, manipulating game flow, with statistical assessments rating her knowledge at 5/5 and overall ability at 4/5, though willpower and speed rank lower. Under pressure, she enters a reckless "cold state," abandoning her digital approach to pursue high-risk hands.
At the prefectural tournament, Tōka arrives amid media attention, sensing Saki Miyanaga’s aura akin to Koromo’s. She identifies Nodoka as "Nodocchi" mid-match, alerting teammates. As vice-captain, she critiques performances bluntly—chastising Tomoki Sawamura’s third-place finish while encouraging Hajime Kunihiro—and manages Koromo’s outbursts, arranging repairs for Nodoka’s stuffed penguin, Etopen. Facing Nodoka directly, Tōka shifts focus to outshining her rival, triggering her "cold state." This deviation yields initial success but leaves her vulnerable to opponents like Momoko Touyoko.
In the individual tournament, Tōka competes as reigning champion. After confident advancement, Kaori Senoo’s beginner’s luck thwarts her progress. Recovering with Hajime’s support, she reaches the finals but fails to qualify for nationals. Later, she reads bedtime stories to Koromo and agrees to Kiyosumi’s training camp, motivated by her unresolved rivalry with Nodoka.
During the camp, Tōka expresses concern for Koromo’s well-being. Confronting multiple strong opponents induces her "cold state," leading to a dominant yet physically taxing performance against Saki, Koromo, and Yasuko Fujita. Upon awakening, she denies employing the recorded aggressive style.
At nationals, Tōka visits Kiyosumi’s hotel bath and dines with them, fulfilling a promise to Koromo. She watches Nodoka’s matches closely, expressing excitement at Nodoka’s early awakening. Observing rare yaku displays and Teru Miyanaga’s prowess, she later contacts Hisa Takei to repair Etopen after discovering its damage via Hagiyoshi’s footage, believing this stabilizes Nodoka’s gameplay.
Her development centers on protecting Koromo—initially joining team tournaments to support her—and navigating rivalry-fueled tension with Nodoka, balancing personal recognition with loyalty to team and family.
Her digital mahjong style prioritizes careful play for small, consistent wins. She excels in "cold" conditions, manipulating game flow, with statistical assessments rating her knowledge at 5/5 and overall ability at 4/5, though willpower and speed rank lower. Under pressure, she enters a reckless "cold state," abandoning her digital approach to pursue high-risk hands.
At the prefectural tournament, Tōka arrives amid media attention, sensing Saki Miyanaga’s aura akin to Koromo’s. She identifies Nodoka as "Nodocchi" mid-match, alerting teammates. As vice-captain, she critiques performances bluntly—chastising Tomoki Sawamura’s third-place finish while encouraging Hajime Kunihiro—and manages Koromo’s outbursts, arranging repairs for Nodoka’s stuffed penguin, Etopen. Facing Nodoka directly, Tōka shifts focus to outshining her rival, triggering her "cold state." This deviation yields initial success but leaves her vulnerable to opponents like Momoko Touyoko.
In the individual tournament, Tōka competes as reigning champion. After confident advancement, Kaori Senoo’s beginner’s luck thwarts her progress. Recovering with Hajime’s support, she reaches the finals but fails to qualify for nationals. Later, she reads bedtime stories to Koromo and agrees to Kiyosumi’s training camp, motivated by her unresolved rivalry with Nodoka.
During the camp, Tōka expresses concern for Koromo’s well-being. Confronting multiple strong opponents induces her "cold state," leading to a dominant yet physically taxing performance against Saki, Koromo, and Yasuko Fujita. Upon awakening, she denies employing the recorded aggressive style.
At nationals, Tōka visits Kiyosumi’s hotel bath and dines with them, fulfilling a promise to Koromo. She watches Nodoka’s matches closely, expressing excitement at Nodoka’s early awakening. Observing rare yaku displays and Teru Miyanaga’s prowess, she later contacts Hisa Takei to repair Etopen after discovering its damage via Hagiyoshi’s footage, believing this stabilizes Nodoka’s gameplay.
Her development centers on protecting Koromo—initially joining team tournaments to support her—and navigating rivalry-fueled tension with Nodoka, balancing personal recognition with loyalty to team and family.