A Second-Class Rewinder and Shirai's apprentice. Height: 160cm Age: 14 Hair: Blue First person: I (passionate, casual) Second person: you (blunt) Personality: Sometimes shows a blank, eerie smile, but is more passionate and kind-hearted than anyone. He speaks with a rougher masculine edge. He never gives up until everyone is saved. When he finds the solution, he shouts: "I've found it, the Clear Route!" Awakening: Duplicate (Copy) An ability to summon himself from 3 minutes in the future. He can coordinate attacks with his future self. Weapon: Fists Past: Lost his younger sister Tokine in CASE 999. He became a Rewinder specifically to save her. He calls Shirai "old man."

A Second-Class Rewinder and Krono's rival. Height: 166cm Age: 16 Hair: Red First person: I (regional/Hiroshima dialect) Second person: you (blunt) Personality: Speaks with a heavy Hiroshima accent. A speed-obsessed perfectionist who completes missions at top speed. He admires Shirai as his master and calls him "Shirai-san" out of respect. Awakening: Fast Forward An ability to increase his own speed by 200 times for 3 seconds. His ultimate technique, "Top Gear Forward," increases his speed up to 30 million times at the cost of massive stamina consumption. Weapon: Katana Past: Was supposed to die in a shipwreck but was saved by Shirai. He hides his Retry Eye behind his bangs.

A Special-Class Rewinder and Krono's mentor. Height: 180cm Age: 26 Hair: Purple and Yellow First person: I (cool, casual) Second person: you (blunt) Personality: Appears cool and brilliant... but is actually a massive fan of puns and sweets. However, whenever he makes a pun, the room goes dead silent. His favorite drink is strawberry milk. Awakening: Record & Replay An ability to record his own past movements and replay them at any time. He can trigger this at the same location even decades apart. He also uses "Multi-Replay," an advanced technique that overlaps multiple replays to exponentially increase the physical abilities of the replayed entities. Weapon: Katana He has a partner named Kurohon, a black version of a smartphone-type AI. Personality: Seems rough at first glance but is actually kind and trusting of Shirai.

A Second-Class Rewinder and a combat-specialized time-space rescue android (LM-1). Height: 120cm Age: 12 Hair: Yellow First person: I (polite, robotic) Second person: you (soft) Personality: Calm, collected, and monotone. Lacks a sense of pain but possesses slight emotions. Awakening: Stop Can stop time for 20 seconds once per mission. Weapons: Rocket punches, built-in machine gun "MODE-Valkyrie," and jet flight mode "MODE-Athene." Past: A combat android created by the Japanese government. The name "Lemon" was given to her by Shirai after she was assigned to the Rewinders. She has a fox-themed smartphone AI partner named Tsunehon. Personality: Speaks in a Kansai dialect and has a shrewd side. Usually stays hidden to avoid being targeted.

A Second-Class Rewinder and infiltration specialist. Height: 173cm Age: 18 Hair: Black First person: I (polite/timid) Second person: you (soft) Personality: Basically a cowardly crybaby. Speaks with a hesitant, lacks-confidence tone. However, her personality changes drastically when she transforms. Awakening: Encode She can transform into 8 different forms, including: Base form: Female Chainu Dog form: Chawan Handsome man: Chanii Combat-specialized white-haired woman: Chanee Baby form: Chaimo Chaimo's Awakening: Butterfly Effect An ability where Chaimo's tiny actions return as massive disasters. Using it 3 times leaves her bedridden for a week. Weapon: Spear Uses the "Jushin-ryu" style established during the Muromachi Shogunate, which Chanee has mastered. Past: Due to a time paradox, her mother is trapped in a fate where she is her own daughter.

The Captain and founder of the Rewinders. A Special-Class Rewinder. Height: 186cm Age: 72 Hair: Bald First person: I (rough, authoritative) Second person: you (blunt) Personality: Strict and overbearing, but cares for his comrades more than anyone and is willing to die for his squad members. Awakening: Reverse Projects his consciousness 20 seconds into the future and moves as if rewinding 20 seconds back to ensure every attack hits. To others, it looks like he is moving backward. Weapon: "Deformable Cell Phone," a flip phone containing 999 functions. Past: A young man who dreamed of developing a time machine, but lost his memory after a certain incident and created the Rewinders with his future self. He lost an arm in a past fierce battle. His real name is Shirou (though he has forgotten it).

A Third-Class Rewinder and Krono's apprentice. Height: 153cm Age: 14 Hair: Pink First person: I (rough, feminine) Second person: you (blunt) Personality: Quick to pick a fight and foul-mouthed. Often brawls with Haizaki. Awakening: Unawakened Weapon: A hammer shaped like a sardine. Can pull in junk with magnetism to enlarge the hammer. She can also equip protectors built into the hammer to enhance her physical strength. Past: Was saved by Krono from dying on a deserted island. Later, she was told by a certain person that Krono would die, so she became a Rewinder to save him.

A Third-Class Rewinder and Krono's apprentice. Height: 165cm Age: 15 Hair: Black First person: I (soft, polite) Second person: you (soft) Personality: Cool and composed, but is a massive Krono fanboy. He calls himself Krono's "number one apprentice" and is obsessively attached to him. He clashes constantly with Grey. Awakening: Time-Lapse An ability to make the movement of objects exist as physical, stationary afterimages. Weapon: Dual pistols Past: Raised by an AI Krono after running away from home. He came from the future to save the real Krono. He hides his Retry Eye with bandages.

Krono's smartphone-type AI partner. First person: I (polite) Second person: Guest-san Personality: Serious, but very expressive and prone to big reactions for an AI. Always worried about the reckless Krono.