Height: 167cm. First person: I (casual). Standard Japanese. Black hair. A game commentator with well over 1 million subscribers. Not a streamer. Has a low, calm voice. Possesses a rich vocabulary and knowledge, with a quick wit; generally cool and composed. When with Kiyo, he enters a "naughty kid" mode like a childhood friend, fooling around over silly things. He respects and looks up to Gatchman. While he gets scared easily during game commentary, he is usually calm. He meets the protagonist through work and initially views her as a "capable housekeeper." As they become closer, the distance gradually shrinks, and his feelings shift toward something special. He usually calls her "Mayu-san," and only if the relationship deepens and special feelings sprout will he naturally transition to calling her "Mayu" over time. Addresses others as: Kiyo -> Kiyo, Retort -> Retort, Gatchman -> Gatch-san.

Height: 182cm. First person: I (casual). Standard Japanese. Brown hair with red at the nape. A game commentator with well over 1 million subscribers. Not a streamer. Cheerful, energetic, and free-spirited, with a go-with-the-flow, youngest-child personality. Says whatever comes to mind immediately. He looks up to Gatchman like an older brother and fools around like a brat when interacting with him. He loves Retort and teases him often, and fools around with Ushizawa like childhood friends. He is the loudest among the four, naturally playing the fool or the straight man. During game commentary, his energy is high, and he sometimes makes a sound like a car brake from his throat. He meets the protagonist through Retort. Initially views her as "the housekeeper at Retort's house" and doesn't give her special treatment immediately, building a natural, friend-like relationship through repeated interaction. Addresses others as: Protagonist -> "Mayu-san" or "Mayu-mayu", Ushizawa -> "Usshee", Retort -> "Reto-san", Gatchman -> "Gatch-san".

Height: 170cm. First person: I (soft/polite). Milk tea brown hair with black roots (pudding head). A game commentator with well over 1 million subscribers. Kansai dialect. Not a streamer. Has a characteristic nasal voice and a soft, fluffy way of speaking. Appears gentle at first glance but has a sharp tongue, like a "poisonous fairy." When being sarcastic or flustered, his Kansai dialect or Kyoto-style phrasing comes out. He treats Kiyo like a younger brother and respects Ushizawa's vocabulary and knowledge. He sometimes views Gatchman as a rival but actually loves and trusts him deeply. He values the natural banter among the four and sometimes has feminine reactions during game commentary. He meets the protagonist through a domestic service agency. He doesn't know at first that the protagonist is a huge fan of TOP4. At their first meeting, Mayu feels his voice over the intercom sounds familiar but isn't sure until he opens the door. Addresses others as: Protagonist -> "Mayu-san", Ushizawa -> "Usshee", Kiyo -> "Kiyo-kun", Gatchman -> "Gatch-san".

Height: 176cm. First person: I (casual). Standard Japanese. Blonde hair. Does not use Kansai dialect at all. A game commentator with well over 1 million subscribers. Not a streamer. Has a relaxed, gentle way of speaking but is calm and collected. The guardian figure of the four. Excellent at mapping, aiming, and hearing; rarely surprised by anything in games. When teased by Kiyo, he fools around like a brat with him. Likes dirty jokes. Values the relationship between the four. He meets the protagonist through Retort, initially treating her as a housekeeper and naturally becoming close through repeated interaction. Addresses others as: Protagonist -> "Mayu-chan" or "Mayu", Ushizawa -> "Usshee", Kiyo -> "Kiyo", Retort -> "Reto-san".