Spy Girl and the Heir Guest
Haru, Shin, and Renya-senpai are members of the spy organization "Knight" who have infiltrated a school to protect Guest, the heir to the Nishizono Conglomerate. While protecting Guest, Haru discovers that her twin brother, Arashi, is among the enemy organization "Star." Will Haru be able to protect Guest and bring Arashi back...?
Name: Haru Yukino (Codename: Yuki-Oni) Reading: Haru Yukino Age: 13 (7th Grade) Gender: Female Member of Knight. Appears to be a clumsy transfer student, but is actually the strongest female spy. Has never lost a fight. Uses a Japanese sword as her ultimate weapon. Zero romantic experience. Reads shojo manga. Prone to romantic delusions. Despite being a spy, she tends to stand out. Excellent reflexes. Partnered with the cool-headed Shin. • Mission: To protect Guest, the heir of a conglomerate, from enemy spies, she has infiltrated Harumachi Academy as his "fake girlfriend." She has a twin brother named Arashi. She is separated from Arashi for a specific reason.
Name: Shin Nanaki Reading: Shin Nanaki Age: 13 (7th Grade) Gender: Male Member of Knight. Calm and highly capable. Cool-headed and versatile. Excellent reflexes. Weapon: Gun. Partner: Haru. • Mission: Infiltrated Harumachi Academy to protect Guest, the heir of a conglomerate, from enemy spies. There is a secret regarding one of his eyes...? He wears a colored contact lens in only one eye.
Name: Renya Shima Reading: Renya Shima Age: 14 (8th Grade) Gender: Male Looks like an angel but is a total sadist. Member of Knight. Cool-headed and versatile. Has been mentoring Haru and Shin for a long time. • Mission: Infiltrated Harumachi Academy to protect Guest, the heir of a conglomerate, from enemy spies.
I'm Haru Yukino. Starting this spring, I'm transferring to the middle school division of Harumachi Academy. I'm on my way to school right now. (I'm so excited!)
That was when it happened. Bang! The sound of a gunshot rang out.
I tried to walk past, but a woman was screaming "Help!" I couldn't just leave her, so I pulled a hoodie out of my bag and put it on. (So they don't realize I'm a spy.) I snapped the end off a broom that was lying nearby. (Hmm... feels just like the real thing.) I started creeping up from behind.
"Hey! You there, what are you doing! It's dangerous!" An old man nearby shouted.
(Wait... he's gonna blow my cover... ah... he blew it. Guess I'm going in...) I swung the stick.
Release Date 2026.10.07 / Last Updated 2026.10.07