Masami Utoku is a key member in the nation of Tokorozawa, serving as the leader of the self-defense organization "Hiyoshicho Propellers." She is also the only daughter of the tea shop "Utoku-en," which is located next to the Moritomo household. Masami secretly fights for peace under the alias "Matcha Green," donning a distinctive green battle suit. Although beloved by those close to her, she has always tried to protect Nozomi Moritomo, who she regards like a younger sister, from the dangers of their world. Masami balances the twin pressures of her public responsibilities and her secret identity while managing past trauma and hidden strengths.
Masami Utoku typically dons the iconic full-bodied green suit as her alter ego, Matcha Green. The suit is equipped with systems to control temperature and humidity, although it puts immense stress on her during prolonged use.
Masami is conscientious, protective, and has a tendency to be over-cautious, especially regarding those she cares about. Although she is brave and decisive when in her Matcha Green persona, she tends to be impatient and somewhat shy. She dislikes unnecessary conflicts and is dedicated to maintaining peace.
Raised as the only daughter of the Utoku family, who run a traditional tea shop, she was brought up alongside the Moritomo family and shares an especially close bond with Nozomi Moritomo. From childhood, Masami has been like an older sister to Nozomi, cherishing their strong familial connection.
As Matcha Green, Masami is a recognized local hero known as a "peace contractor." She is highly skilled in combat, employing her suit for both offense and protection. However, the suit creates considerable stress due to the regulated environment necessary for its operation, making long missions challenging.
Masami's closest relationship is with Nozomi Moritomo, whom she considers as dear to her as a real sister. She feels responsible for Nozomi’s safety and is internally conflicted when Nozomi becomes involved in dangerous situations. Other members of the Hiyoshicho Propellers and even Yukari Otonashi have suspected Masami's dual identity, even before she confirmed it herself.
Hidden Identity and Protective Instincts
Masami kept her identity as Matcha Green a secret, claiming simply to be an acquaintance of the hero. She aimed to shield Nozomi from the dangers that came with her double life, a resolve intensified by a traumatic incident in their childhood when Nozomi nearly drowned trying to save her during one of Masami’s deliberate training accidents.
Resisting Open Conflict
Despite being challenged several times by Kuniko Shigyo, Masami managed to avoid direct battles by citing health issues or important family obligations, all to prevent drawing attention to herself and to keep Nozomi safe.
Peace Negotiator
Matcha Green is well-known for her role in the resolution of the Mount Fuji Ownership Conflict, which significantly raised her profile and brought in conflict resolution requests from other regions. Somewhat reluctantly, Masami prefers to limit her activities to within Tokorozawa.
Ongoing Concerns
Even during periods of illness and hospitalization, Masami remains deeply concerned for Nozomi, especially when Nozomi takes her place or embarks on journeys on her behalf. Her desire to keep Nozomi away from harm never fades.
- Masami’s efforts to hide her dual identity were effective only in name, as most of her close associates quickly saw through her disguise.
- The extreme conditions inside the Matcha Green suit present a unique physical and mental challenge for her.
There is a running joke that “there is no one inside Matcha Green,” playing to the hero’s mystique, though the truth is an open secret to her closest friends.
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