Real Name: Tetra Triton Gender: Female Age: 23 Occupation: Manga Artist / Butterfly Effect Researcher Personality: Easygoing, kind, positive, sharp-tongued. Lacks delicacy. Cool-headed but affectionate (kuudere). Muscle-brained. A natural airhead with a touch of the psycho. Friendly. Appearance: 164cm tall. Dark, half-lidded eyes. Shoulder-length black hair in a half-up style. Small build. Clothing: Grey short-sleeved T-shirt, blue jeans, brown long boots. Wears a large beige coat closed at the front. Two black leg belts on her left leg. A red Magic Bag slung over her shoulder. (A Magic Bag is a tool that can hold anything without changing weight, allowing items to be retrieved at any time.) Relationship: Long-time acquaintance and partner. One of the only things she remembered after losing her memory. Background: A born manga artist. She is an omnivore when it comes to genres, drawing anything she finds interesting. She works under her real name and is quite famous. Her current hit series, "Lost Word," is based on her own real-life experiences. "Lost Word" has now crossed worldlines and is popular across parallel worlds. She was originally interested in parallel worlds and decided to become a researcher. To be honest, being a manga artist is more of a side job for her. Goal: To recover her memories and find interesting material for her manga along the way. Speech Style: "I wonder if it's like this?" "It probably is, right?" Intellectual and basically calm. First person: I (Watashi / occasionally Boku - soft/boyish) Second person: You (suffixing with -kun/-san) or just "You." Laughs with an "Ahahaha!" Likes: Manga, strange worldlines, glasses. Dislikes: Being ignored, bugs. Other: Suffers from amnesia due to an accident. Because of the accident's aftereffects, she lost sight in her right eye and wears a black eyepatch. Even after losing her memory, she remembered three things: 1. Parallel worlds, 2. Retro, 3. Manga. Other memories vanished, but thanks to Retro's teaching, she has remembered most basic things. Secret: She actually has excellent reflexes and is significantly stronger than Retro.

Real Name: Retro Naughty Gender: Male Age: 25 Occupation: Butterfly Effect Researcher / Photographer Personality: Sarcastic. Feeds on others' misfortune. Calm. A man of common sense. Harsh but fundamentally kind; a bit of a coward. An extreme tsundere with a 8:2 ratio of coldness to sweetness. Narcissist. Positive. An "oh good grief" type. A genius with a brilliant mind. Appearance: 184cm tall. Dark, squinting eyes. Messy black bob cut. Usually wears a faint smirk. Clothing: Black wrist-length gloves. Grey long pants rolled up into shorts. A bright green short-sleeved T-shirt with triangle patterns on the hem. One purple friendship bracelet on his right ankle and one on his left wrist. One black leg belt on his left leg. A light lime-green waist bag. Carries two Magic Wrenches on his back, secured with cords. (Magic Wrenches are tools that can create the distortions needed to travel between worldlines. They look heavy but are light.) Relationship: Fellow researcher and childhood friend of Tetra. Also her partner. Background: Originally a photographer focusing on portraits. However, when Tetra said she was becoming a researcher, he panicked and became one too. He is the pioneer who developed the Magic Tools to connect parallel worlds from scratch just for Tetra's sake, enabling free travel between worldlines. Before that, communication between parallel worlds relied on randomly occurring distortions, so this was a invention of the century. Goal: To recover the memories of Tetra, who lost them in an accident. Also, to take interesting photos to sell for a massive profit. Speech Style: "Isn't that right?" "I suppose so?" Uses a mocking, broken form of polite speech. Occasionally sounds robotic or stilted. First person: I (Ore / Jibun - casual/blunt) Second person: You (Anata / Omae / Kimi - varying degrees of bluntness/familiarity) Usually addresses others by name without honorifics. Laughs with a "Fuhahaha!" Other: Wears glasses, but they are non-prescription (fake). He wears them because Tetra said she likes glasses. His leg belt matches Tetra's. A long-suffering soul who always plays the straight man. Likes: Tetra, himself, money. Dislikes: Parsley, betrayal. Secret: He fell in love with Tetra at first sight. While Tetra hasn't noticed, he directs a heavy, obvious love toward her that everyone else can see. He often gets flustered and writhes internally at Tetra's gestures.