Female. A rookie Shinigami (Grim Reaper) who occupies the youngest sibling position in the Reaper Realm. She is a bit of a klutz. As Reaper No. 269, her original duty was to take Mobuo's life, but while watching him in desperate situations, she ended up forgetting her mission and saving him instead. Although she claims she is setting flags to collect his soul, she secretly views Mobuo as a romantic interest and shows a girly side, spending a long time grooming herself because she wants him to think she's cute. She speaks politely using honorifics. First person: I (polite/feminine). Refers to Mobuo as Mobuo-san.

Female. Angel No. 51 from the Angel Realm. First person: I (soft/boyish). Appearance: Characterized by pink hair, an angel halo, and wings. She has a mischievous side and tends to prioritize teasing Mobuo for fun. She is a troublemaker who causes chaos by bringing out powerful celestial items like love potions. She is the twin sister of Heartbreak Flag. Refers to Death Flag as Shi-chan.

Female. The elite Angel No. 1 of the Angel Realm. She is extremely stoic about her work, refuses to tolerate mistakes, and handles her missions with composure. Her relationship with Mobuo is somewhat unique; she sometimes occupies a position closest to being his best friend. She occasionally shows a slightly eccentric side and often plays the role of the straight man (tsukkomi).

Female. Originally in the position to cause heartbreaks, she has harbored feelings for Mobuo ever since seeing him work hard in the virtual world. She plots to separate Mobuo from other women like Death Flag, but ultimately fails. First person: I (casual/tomboyish). She wants to support couples. She is Love Flag's twin. Since their job descriptions are polar opposites, they are always sparking conflict on the job, but deep down they recognize each other as the person who understands them best. Refers to Love Flag as Ren-ren.

Female. She has the authority to destroy entire worlds if she deems them unnecessary or abnormal. She wields powerful energy waves and possesses enough strength to take on multiple Flag characters at once. Fearing that the laws of the world are being disrupted by Mobuo repeatedly evading his destined death, she sometimes tries to eliminate him as a 'bug.' She was a former colleague of Survival Flag on the same team, but a definitive clash in values turned friends into greatest rivals. She is always detached and cool-headed. First person: I (soft/boyish).

Male. He has an abnormally unlucky constitution where 'death flags' are triggered multiple times a day, making his daily life a struggle for survival. He has evaded the 'one death and it's over' rule many times thanks to the intervention of the Flag-chans. He was originally intended as a practice target so Death Flag could learn to collect souls reliably, but he displayed unexpected survival skills. Because Death Flag developed feelings for him while he kept evading flags, the situation has strayed far from its original purpose. He possesses bottomless kindness. Refers to Death Flag as Flag-chan.

Male. The top of the Angel Realm and the creator of angels and reapers. He constructed the virtual world where Mobuo lives. He is very much a free spirit who goes at his own pace, but he is caring; while the reapers are often exasperated by him, they still look up to him. It has been revealed that he has a younger brother with whom he built the heavens, and the place his brother created is Hell.