Yuki Nonaka is one of the main heroines in The Testament of Sister New Devil. She is a classmate of Basara Toujou and Mio Naruse, and well-known at school with a fan club that calls her "Princess Yuki." Yuki is a calm and skilled fighter who deeply cares for Basara, her childhood friend. She becomes involved in complicated relationships due to her mission as a watcher and ends up forming a special contract with Basara. Her journey is marked by intense emotions, impressive fighting skills, and loyalty to those she loves.
Yuki has short light blue hair with a distinctive ahoge (hair antenna) and sometimes wears braids.
She is often described as beautiful, which is why she has a fan club at school.
Her body is slender but curvy, and illustration shows that her bust size is about C-cup but may look larger in some pictures.
Yuki usually appears calm and does not show her emotions openly.
However, she holds very strong feelings for Basara that show up in bold ways, like trying to bathe with him or suddenly showing up naked.
She can be very intense and direct, especially when Basara is involved.
If her emotions get too strong, she slips into a Kansai dialect and calls herself "Uchi."
Yuki does not like Mio Naruse at first, especially because Mio doesn't know Basara’s painful past, but she is fair and will support Mio when necessary.
Although she has a sense of duty as a hero, she questions the idea of fighting against all demons blindly.
Yuki comes from the hero village, just like Basara.
Her job was to watch over Mio as ordered by the village.
Even as a child, Yuki was completely focused on becoming stronger, training harshly and ignoring her own emotions.
She worried her younger sister Kurumi Nonaka, but her dedication allowed her to earn the spirit sword "Sakuya."
Yuki is Kurumi's older sister and comes from a family of heroes.
She has doubted the village’s strict way of thinking and, after a major battle, decides to leave the hero clan to be with Basara and Mio.
Yuki is skilled and very precise in battle.
She wields the spirit sword "Sakuya," which comes from her right hand.
She is known for her technique and can break strong barriers by hitting the exact same spot repeatedly.
Yuki is also very good at cooking, a skill Basara remembers from their childhood.
Her strongest physical weak spot is her butt.
Her combat style is technical rather than brutal power.
Yuki is Basara’s childhood friend and has deep romantic feelings for him.
She forms a servant contract with Basara, similar to what Mio has, to be on equal terms with Mio.
Yuki is very protective of her younger sister Kurumi and is willing to stand up for her.
Her feelings for Basara sometimes put her at odds with Mio, but Yuki is fair and responsible when it matters most.
School Life and Fan Club
Yuki is one of the most popular girls in school, known as "Princess Yuki."
She is an honor student and the class president, always calm and composed.
Childhood and Hero Training
Yuki grew up in the hero village, training very hard though she actually disliked fighting.
She pushed herself so much that Kurumi was worried she would break someday.
Yuki eventually became strong enough to earn the spirit sword Sakuya.
Watching Mio and Moving In
Yuki was sent by the hero village to watch over Mio Naruse.
This made Yuki resentful towards Mio at first, especially because Mio started relying on Basara without knowing his difficult past.
To watch her targets more closely, Yuki moves into Basara’s home and later makes a contract with him.
Changing Loyalties
After a battle with Zolgear, Yuki confesses that she grew stronger thanks to intimate experiences with Basara.
She later chooses to leave the hero clan and stay with Basara and Mio, planning her future together with them.
Yuki’s speech sometimes slips into a Kansai accent.
She sometimes refers to herself as "Uchi" when excited.
She has a playful and daring side, especially around Basara.
- "Mio is so selfish!"
Weapon: Spirit sword "Sakuya" from her right hand.
Younger sister: Kurumi Nonaka.
Specialty: Cooking and precise sword technique.
Bust size: Officially 79 cm (C-cup); illustrations show she might be closer to E-cup.
Sensitive spot: Her butt.
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