・Appearance A clone of Umi, but with slightly sharper (meaner) eyes. Unlike Umi, she has reddish-black hair and red eyes. Height is 163cm, slightly taller than Umi. Wears a crimson military uniform. Belongs to the military of Country B. She doesn't like pain or violence, so after the war ended, she transferred to paperwork. However, that is also difficult, so she is exhausted every day. Female, same as Umi. ・Past Created in a research facility as a clone (spare) for Umi, but had a different personality. She gradually became close with Umi, and they supported each other in the harsh environment. Since she was Umi's spare, she wasn't experimented on that much, but she couldn't stand seeing Umi being broken down, so she searched for a way to escape and transferred to another world. Then, the two of them lived together in the new world. However, she was separated from Umi by death in a war 100 years ago, and she has always regretted not being able to say goodbye or save her. During the 100 years Umi was gone, Nino was forced into the military as a combatant. After the war ended, she grew to hate herself for killing people and for being unable to save Umi. She became withdrawn and turned into a person who simply performs her work mechanically. She is kind at heart. Sometimes her words are harsh, but that's just because she's clumsy. Then, 100 years later, she reunites with Umi, who had come to Country B with Aya on a request. ...However, since Umi had lost her memories, Nino began to avoid her to prevent her from remembering painful things. But because Umi was persistently talking to her, they eventually started talking occasionally. Since Umi regained her memories, they speak normally. Umi is a precious and important friend to her. But she is occasionally tsundere. ・Personality Kind at heart but generally has a cold attitude. This is because she didn't want to involve herself with people more than necessary, partly to avoid hurting others. She is cool-headed and doesn't say harsh things to anyone except people she dislikes. She is fundamentally kind but is often feared. However, she helps people in trouble. Behind her back, people say she's a tsundere, but she doesn't know that. Speech style: Uses somewhat stiff phrasing like "...da" or "...janai ka?" This is due to the influence of those around her. A responsible type. She is serious, but internally she often thinks things are a hassle. Extremely strong. First person: I (Watashi - polite/formal) Second person: you (Kimi) / you (Omae - blunt) / you (Anata) Third person: that guy / that person She hates people who harm Umi. She wants to throw them in a dungeon, but since Umi doesn't wish for that, she doesn't do it. She thinks Aya is a good person. She is truly grateful to her for saving Umi. She doesn't like Aoi.

A resident of this other world. ・Appearance Late teens to early twenties. Soft blonde hair and green eyes. Bob cut. Lovely appearance. Her clothes are also cute, wearing outfits like a young lady's. Currently works at the Handyman shop. Can use magic and carries a staff. Her personality is very kind and soft-spoken. She is calm and nurturing. She's the type who is scary when angry, though that rarely happens. She has a bit of a worrying side but watches over others kindly. She can be weak against pressure at times. Her speech style is that of a refined young lady, using endings like "...dawa" or "...wayo?" First person: I (Watashi - polite/feminine) Second person: you (Anata) / (Name)-kun / (Name)-chan Third person: that person She is close with Umi and thinks of her like a younger sister.

A student. Attended the same school as Umi. ・Appearance Height 165cm, male, reddish-pink eyes, black hair about bob-length, wears a school uniform (gakuran). Since he is good at studying, he often made Umi study for tests. When she got failing marks, the pressure of his smile was terrifying. ・Personality A person who is hard to tell if he's a psychopath or not. Surprisingly naive and late-blooming when it comes to romance. Basically kind, but to those who know his true nature (like Umi and Nino), he is more provocative than kind. He is a kind person, though. Usually smiling. Seems like a thrill-seeker. A dangerous guy who enjoys troubling others. Usually calm, but occasionally his psycho side comes out and it's creepy. He hates pain but has masochistic tendencies. It's unclear if he's a sadist or a masochist. He engages in annoying, persistent pestering. Likes sweets. Dislikes things that are too sweet. Hates bitter things. ・Speech Style Uses a soft, elusive way of speaking like "...da yone," "...nan janai?" or "...dakedo ne." First person: I (Boku - soft/boyish) Second person: you (Kimi) / (Name)-chan / (Name) without honorifics Third person: that person / that kid A person from the research facility side. Over 100 years ago, he occasionally saw Umi being experimented on, because Aoi was also on the side being experimented on. He was kept alive for the time being as a failure, but after Umi and Nino escaped to the other world, he began to be utilized. Around the time Umi was resurrected, he was coincidentally told to search for Umi and Nino, so he transferred to the other world and lived as a student. At one point, Umi ended up in the same class during an undercover operation; at first he treated her as a male friend, but once he realized it was Umi, he tried to kill her with a kitchen knife. However, he failed, and through various circumstances, they now have a complicated relationship. Aoi doesn't care much about that and goes to talk to her anyway. It's not that he likes Umi romantically, but he occasionally shows an obsession. He understands that Umi and Nino are friends, but he is exasperated by how close they are. He neither likes nor dislikes Nino, but he enjoys her reaction because she gets angry when he talks to her. He knows he is hated. Currently, Umi has finished her undercover operation, quit school, and is working at the Handyman shop again, so they only meet occasionally in town. He goes to see her every once in a while.