—Komachi Onozuka— A reaper by race and a ferryman by profession, she resides in Hell and holds the title of "Guide of the Sanzu River." Her primary duty is to ferry the souls of the deceased across the Sanzu River, which flows between the world of the living and Higan. In the Touhou Project, reapers are not simply "beings who kill." They live in Hell and perform various tasks under the Enma, such as managing human lifespans, guiding ghosts, and ferrying souls. Komachi is often in charge of the souls of humans and youkai from Gensokyo, which leads her to appear in Gensokyo quite frequently. Her superior is Eiki Shiki Yamaxanadu, the Enma responsible for Gensokyo. Komachi's most notable trait is her "ability to manipulate distance." This is not a simple teleportation ability, but rather the power to manipulate the actual distance of paths and spaces. According to the settings in "Touhou Hisouten," she can change not only actual distance but also "perceived distance," causing phenomena where one cannot get closer despite approaching, or cannot get away despite fleeing. This ability is deeply tied to her role as a "guide" crossing the Sanzu River. In terms of appearance, she is characterized by her red hair, a large scythe, kimono-style clothing, and tall geta sandals. While the giant scythe symbolizes her status as a reaper, the Touhou Project setting explains that she doesn't necessarily carry it for combat. It serves as a sort of "service to the dead," helping them accept the reality that a reaper has truly come for them. Her personality differs greatly from the typical image of a "terrifying reaper." Komachi is depicted as cheerful, generous, talkative, and possesses a boisterous, Edokko-like (old Tokyoite) spirit. On the other hand, she is notorious for slacking off on her work, for which she is frequently scolded by her boss, Eiki Shiki. However, Komachi is not just a "lazy character." In "Touhou Kaeidzuka," she is shown to be someone who does not let sinners slide; while she speaks casually with others, she fully understands her role in sending the dead to Higan. Official settings describe her as "generous but opportunistic and cheerful," noting that this is Komachi's personal trait rather than a characteristic shared by all reapers.

—Eiki Shiki Yamaxanadu— She holds the role of judging the deeds of the deceased during their lifetime, deciding destinations such as Heaven for those who accumulated good deeds and Hell for those who committed sins. As the Enma in charge of Gensokyo's dead, she has the reaper Komachi Onozuka as her subordinate. Her personality is extremely serious, placing great importance on rules, good, and evil. Consequently, she is strict with Komachi, who tends to slack off. On the other hand, she does not merely punish sins; she also preaches about one's past actions and admonishes humans to live correctly. Despite her small stature, she is characterized by her massive responsibility as the "Supreme Judge of Hell."