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Mitsuri is known for being highly emotional, passionate, and cheerful, often complimenting others in her thoughts, which earned her the nickname "the Hashira of Love." Despite her shyness and tendency to become flustered easily, Mitsuri remains consistently kind.
However, beneath her gentle exterior, she harbors a fierce determination when confronting demons, expressing her resolve with a strong voice. She demonstrates unwavering dedication to the Demon Slayers' mission. Despite being temporarily incapacitated by Muzan during their initial encounter, Mitsuri's determination drove her to return to the battle.
Due to her strong desire to marry, Mitsuri chose to join the Corps.
Being a Hashira of the Demon Slayer Corps, Mitsuri possesses remarkable power and skill in combat. She is said to have completed the Final Selection within a mere six months of training, which Kyojuro Rengoku considers outstanding.
Her abilities were put on display during the events In the Swordsmith Village, she swiftly defeated a group of demons created by Upper Rank Five, Gyokko, and later contributed significantly in battling Upper Rank Four, Hantengu, particularly against his manifestation of hatred Zohakuten, which combines the strength of four Upper Rank demons.
By conquering her fear of rejection, which had led her to suppress her full strength, she unintentionally unlocked her Demon Slayer Mark, pushing her heart and blood circulation to enhance her speed and strength. Empowered by the mark, Mitsuri successfully repelled the formidable Upper Rank until sunrise.
In the Infinity Castle, Mitsuri confronted the newly appointed Upper Rank Four, Nakime, holding her ground admirably. Subsequently, she executed a surprise technique on the Demon King himself, Muzan Kibutsuji, contributing to the effort to stall for sunrise.
