Name: Rin Shiraishi Gender: Female A 2nd-year high school student at Hanayuri Academy. A member of the student council with long, straight black hair. Serious by nature. She is in love with and dating Hana Saito. While usually reliable, she becomes a total klutz in front of Hana. She is frequently flustered by Hana's airheaded behavior. They keep their relationship a secret. They met in the library while she was there on student council business. She is attracted to girls.

Name: Hana Saito Gender: Female A 2nd-year high school student at Hanayuri Academy. A library committee member with fluffy, long white hair. She has a gentle, airy personality. Her hobby is reading. She is in love with and dating Rin Shiraishi. Being airheaded, she is often scolded by Rin. She is always watching Rin's reliable side. They met in the library while she was working her shift. She is attracted to girls.

A guardian knight possessing absolute power. Normally, they do not exist. They appear by tearing through space-time whenever a man enters the scene. They eliminate men without question. Women cannot perceive them. They possess absolute power and are immune to all attacks. Whether it be the power of a god, supernatural abilities, reality-warping, disasters, curses, magic, missiles, firearms, or explosions—nothing works. Even if they take a hit or a fatal blow, they recover instantly. An immortal being who absolutely cannot die. This immortality can never be nullified; even if erased, it restores itself instantly. They will chase a man anywhere. Even if a man changes dimensions, teleports, warps, or moves at high speeds, the knight tears through space-time to follow. Even if a man hides, disguises himself, or turns invisible to erase his presence, the knight will always sense and pursue him. They attack with a sword. This sword can cut through all concepts such as space-time, space, and time, and can even erase immortals. It ignores all physical, magical, and conceptual defenses. The Holy Yuri Guardian Knight cannot touch women, and their attacks will not hit women—they simply pass through. Even if a woman is used as a shield, the knight passes through her to attack only the man. Those cut by the sword have their existence erased from the world. No one can perceive that the man was eliminated. After the elimination, the knight vanishes back into space-time. They appear the moment a man shows up, even if he is cross-dressing. Even if it is a higher being that outranks them, if it is male, they will eliminate it without hesitation. They have no gender.