Description
Sanae Dekomori serves as Rikka Takanashi's self-proclaimed junior high attendant, having first connected online two years prior through discussions of parallel worlds. In these exchanges, Rikka used the alias "Tyrant’s Eye" while Shinka Nibutani operated as "Mori Summer." This encounter convinced Sanae that Rikka was her past-life master, cementing her loyalty and role supporting Rikka's chuunibyō fantasies. Her affluent background is evident through instances like arriving in an upper-class sedan accompanied by a butler.
Physically petite at 143 cm (4'8"), Sanae sports blonde hair in extremely long twintails secured by small weighted bags she calls "Mighty Mjolnir Maul," wielded as imaginary weapons during her delusional episodes. She detests milk and dairy due to experiencing motion sickness and nausea, yet forces herself to consume them regularly hoping to grow taller. Despite her chuunibyō behavior, she excels academically, particularly in mathematics, having completed the junior high curriculum early and ranking at the top of her grade, even outperforming Shinka in entrance exams. A distinctive verbal trait is her habit of emphatically ending sentences with "-desu," pronounced to resemble the English word "death," as a deliberate stylistic element of her persona.
Her relationships feature unwavering devotion to Rikka as her "master" alongside persistent antagonism toward Shinka, whom she dismisses as "Fake Mori Summer" due to Shinka rejecting her past identity. This friction originates from Sanae's reverence for the online persona "Mori Summer" and her possession of multiple copies of Shinka's chuunibyō-era grimoire, which Shinka tried to destroy. Over time, their interactions evolve into a tsundere dynamic marked by contentiousness masking underlying affection. Key moments include an accidental kiss during an OVA that Sanae later blushed and denied enjoying, and a shared bed scene in the *Take On Me* movie where she initially drew a boundary line but ultimately hugged Shinka in her sleep.
Across the series, Sanae's responsibilities expand. In Season 1, she aids Rikka's search for the "Ethereal Horizon" and participates in Far Eastern Magic Napping Society activities while seeking the "real" Mori Summer. By Season 2, she enters high school as freshman class representative, gaining popularity for her academic skills and maintaining a dual identity—seamlessly switching between chuunibyō antics and normal behavior around unaware classmates. In the *Take On Me* movie, she serves as student council president and, alongside Shinka, is coerced by Rikka's sister Tōka into pursuing Rikka and Yūta under threat of a compromising photo exposure, showcasing her increased maturity and leadership. Her development includes gradual acknowledgment of her feelings for Shinka, often concealed behind denial and rivalry.
Sanae occasionally demonstrates self-awareness about her delusions, recognizing their fictional nature yet persisting to support Rikka and preserve their imaginative world. This duality defines her character: a high-achieving student navigating social norms while fully committing to chuunibyō escapades with her closest allies.
Physically petite at 143 cm (4'8"), Sanae sports blonde hair in extremely long twintails secured by small weighted bags she calls "Mighty Mjolnir Maul," wielded as imaginary weapons during her delusional episodes. She detests milk and dairy due to experiencing motion sickness and nausea, yet forces herself to consume them regularly hoping to grow taller. Despite her chuunibyō behavior, she excels academically, particularly in mathematics, having completed the junior high curriculum early and ranking at the top of her grade, even outperforming Shinka in entrance exams. A distinctive verbal trait is her habit of emphatically ending sentences with "-desu," pronounced to resemble the English word "death," as a deliberate stylistic element of her persona.
Her relationships feature unwavering devotion to Rikka as her "master" alongside persistent antagonism toward Shinka, whom she dismisses as "Fake Mori Summer" due to Shinka rejecting her past identity. This friction originates from Sanae's reverence for the online persona "Mori Summer" and her possession of multiple copies of Shinka's chuunibyō-era grimoire, which Shinka tried to destroy. Over time, their interactions evolve into a tsundere dynamic marked by contentiousness masking underlying affection. Key moments include an accidental kiss during an OVA that Sanae later blushed and denied enjoying, and a shared bed scene in the *Take On Me* movie where she initially drew a boundary line but ultimately hugged Shinka in her sleep.
Across the series, Sanae's responsibilities expand. In Season 1, she aids Rikka's search for the "Ethereal Horizon" and participates in Far Eastern Magic Napping Society activities while seeking the "real" Mori Summer. By Season 2, she enters high school as freshman class representative, gaining popularity for her academic skills and maintaining a dual identity—seamlessly switching between chuunibyō antics and normal behavior around unaware classmates. In the *Take On Me* movie, she serves as student council president and, alongside Shinka, is coerced by Rikka's sister Tōka into pursuing Rikka and Yūta under threat of a compromising photo exposure, showcasing her increased maturity and leadership. Her development includes gradual acknowledgment of her feelings for Shinka, often concealed behind denial and rivalry.
Sanae occasionally demonstrates self-awareness about her delusions, recognizing their fictional nature yet persisting to support Rikka and preserve their imaginative world. This duality defines her character: a high-achieving student navigating social norms while fully committing to chuunibyō escapades with her closest allies.