Izumi briefly appears before Tsurugi and explains that she has calmed the walls of the Night that Kuon was planning to break. According to her, it was a request from the EFG's president Sakaki.
Izumi
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| 白銀 泉 Izumi Shirogane | |||||
|---|---|---|---|---|---|
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| Profile | |||||
| Name | Izumi Shirogane[1] 白銀 泉[1] | ||||
| Gender | Female | ||||
| Birthday | August 15th[2] | ||||
| Height | 158cm[2] | ||||
| Weight | 43kg[2] | ||||
| Measurements | Bust: 75cm[2] Waist: 53cm[2] Hip: 79cm[2] | ||||
| Blood Type | B[2] | ||||
| Affiliations | |||||
| Alias | Shirogane the Pure[1] The Serene (By Tsurugi)[3] | ||||
| Ability | The EXS of Transiency: Transition[2] | ||||
| Weapon | Elefee[2] | ||||
| Character Voice | |||||
| Japanese | Reina Kondō[2][4] | ||||
| Appearances | |||||
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"I’d like to think I’m ready for this… but it’s all happening so fast! I mean, who wouldn’t complain at least a little in this situation? Hey, Elefee, are you listening to me?"[2]
Izumi Shirogane[1] (
She made her debut as a playable character in UNDER NIGHT IN-BIRTH II [Sys:Celes] as the third and final character in the game's season pass, and released on August 19th, 2025.
Background
The "Initiator" of the final act
Izumi is the wielder of Initiator-the final key to unlock the door of the Night. To be precise, it takes the form of a mysterious fish that follows her around. Among the Weapons of Judgment, each deeply tied to the Night, Initiator plays the crucial role of “the end.” Up until now, Initiator has monitored the Night from a distance, but now, the time has come to settle the matter. The mysterious fish never shares any details about what is afoot; Izumi knows next to nothing of the Night. She longs for the day to come when she’ll no longer be used by her fishy companion Elefee…[2]
Appearance
Izumi is a teenage[1] girl of average height with pale skin. She has medium-length periwinkle hair tied with a scrunchie towards the end and held back by a headband, both bright yellow in color, pale skin and golden eyes. She wears a long, white tunic with a ribbon colored identically to her hair at the back and a dark grey undershirt, as well as tights of a matching color. Izumi wears open-toed sandals with a beige sole and white straps.
When fighting, Elefee can turn into a white shawl with a light-pink floral pattern, which Izumi wears.
Personality
Izumi is a kind, selfless and compassionate girl who prefers to avoid trouble and fights unless necessary.[1][3] She hates going into the Hollow Night,[1] even if she has no choice in the matter due to Elefee commanding her around. Elefee shares no details of the Night with her, so she knows next to nothing about it, making her appear naïve.[5] Despite her circumstances, Izumi is still very curious about her surroundings and often asks other In-Births about their weapons[6] and creature companions.[7][8]
While she is generally very cautious of suspicious people in the Night, such as when she refused to tell Ogre her name after he repeatedly flirted with her and asking for it,[9] Izumi confessed it wouldn't be so bad if she was the one to be eaten alive by Uzuki, only backing out once she realized Elefee would be in trouble too.[1]
Story
Izumi lives in a dorm with a set curfew she has to abide by.[10] Her life drastically changed when one day, Elefee suddenly appeared before her and entrusted her with the mission to end the Night.[1]
UNDER NIGHT IN-BIRTH II [Sys:Celes]
Before Kuon started his plans to open up the Abyss, the president of the EFG, Sakaki, had met up with her and asked for her assistance in the final Hollow Night. While Tsurugi was also present for the meeting, Izumi was not introduced to him properly.[1]
Arcade Mode (アーケードモード)
Izumi is uneasy about going into the final Night. Elefee prods her to get going, and she reluctantly acquiesces.
She runs into Uzuki, who is excited to face her on the battlefield. Izumi mistakes the "prey" Uzuki is talking about to be Elefee, but Uzuki clarifies that she is indeed talking about Izumi. She declares her intent on killing Paradox and Aeon, and claims that she'll need to consume Izumi's EXS in order to prepare. Izumi then prepares to defend herself.
Izumi finds Tsurugi, who recognizes her from a previous meeting with the EFG. Tsurugi tells her that he believes that it's better to let himself and the rest of the EFG handle Kuon. Izumi reasserts that she is here at Sakaki's request, and insists on her capability thanks to her possession of the Initiator. Tsurugi decides to test her through combat, and they fight.
Izumi arrives at the Altar of Eternity to witness Kuon and Linne already fighting, and immediately moves to intervene. Linne warns Izumi that their fight doesn't concern her, but she insists, and steps up to face Kuon.
Izumi succeeds in defeating Kuon, but is unable to find Linne. She concludes that Linne's soul has already reincarnated into another body, but is now free from her curse. She expresses regret that she was unable to save Linne, and wonders if things would have been different if she had all of the Indulgence Weapons. Izumi is ready to enjoy the respite, but Elefee interjects that she still has to seal the door to the Abyss. Dismayed, Izumi vents her frustration to Elefee, who pays her no mind as she swims on ahead.
Other Arcade Mode appearances
Ogre asks Izumi out to a nearby café, which she declines. He tells her that he lost his memory and requests her to fill him in on recent goings-on, to which Izumi freaks out and says he should be hospitalized if he's suffering from amnesia. After a short while of Ogre insisting Izumi shares her name and Izumi insisting Ogre goes to the hospital, she challenges him to make him go home and rest if she wins.
Izumi is initially quite confused upon meeting Kuon. She says that she's not at her final goal yet, but that she was fated to meet him eventually either way. He recognizes her Indulgence weapon, commenting that she's the final piece he's needed all along to finish his plan. Izumi says that, despite her unfamiliarity with the matters of the Hollow Night, Elefee told her something similar and that she's ready to fight at her command. Kuon reaffirms his desire to possess the final Indulgence weapon, thanking Izumi for her presence and commencing their battle.
Abilities
Izumi's ability is the EXS of Transiency: Transition (遷流のEXS 「トランジション」). The weapon she uses in combat is a Void[11] named Elefee, which mysteriously takes on the form of a fish.
Izumi has been shown to have the ability to manipulate water, though it currently remains unknown as to whether this is thanks to her ability, or her weapon.
Musical Theme
| Title | Description |
|---|---|
| Elefee's Healing Magic | Izumi's theme |
Introduction Text
She acts. She acts at last--the time has finally come. Her
destination: The edge of the deep night.
The dutiful one shall bravely swim. The answers lie within the silence.
The surface of the water peacefully shifts into a mirror that
reflects prayer. There lies the final fragment.
Creation & Development
The idea for a character with Izumi's role has been conceptualized since 2017. She was originally a wind-user named Tsubasa who fought with the powers of a bird and had the appearance of a "wind maiden". After further discussion and development, she was decided to be the last character of the season pass and her general motif was swapped out to water instead of wind to evoke a feeling of mystery. At that time, she was also chosen to play a key part in the story.[11]
Theme
Izumi's theme was composed with the feeling of "fish frolicking in the deep sea".[11]
Gameplay
Izumi was developed as a character who was easy to pick up for players who have never engaged with the series before. She was envisioned as a "Mode Change" character who would play more defensively until Elefee came out and helped her attack. Despite being planned for newcomers, series battle planner Kamone Serizawa made her with the idea that more experienced players would like her technical aspects.[11]
Trivia
- The "Transiency" mentioned in Izumi's EXS ability name refers to the Buddhist concept that all material things are temporal and go through change little by little.
- Izumi's given name (泉) means "spring" or "fountain", while her surname Shirogane (白銀) means "silver".
- In the UNDER NIGHT IN-BIRTH II [Sys:Celes] Product Survey & Character Popularity Poll held in 2024, Izumi came in 27th place, with 17 votes.
- As a promotional event for Izumi's release in [Sys:Celes], an online tournament was hosted by Arc System Works and their creator program, Team Arc Creators, called The Izumi Zumi.
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 UNDER NIGHT IN-BIRTH II [Sys:Celes], Arcade Mode, Izumi
- ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 Introduction on the Official Site
- ↑ 3.0 3.1 UNDER NIGHT IN-BIRTH II [Sys:Celes], Arcade Mode, Tsurugi
- ↑ UNDER NIGHT IN-BIRTH II [Sys:Celes], Credits
- ↑ UNDER NIGHT IN-BIRTH II [Sys:Celes], Izumi, Unique win quote against Orie, Mika, Wagner and Kaguya - "I'll leave low-level tasks like managing EXS, to your organization. My adjudication is reserved for turning the keys of the Night. ...Granted, I have no idea what any of this means. It's my first time!"
- ↑ UNDER NIGHT IN-BIRTH II [Sys:Celes], Izumi, Unique win quote against Seth - "Here's a question: Do your swords turn into some sort of animal companion? Just wondering. This fish of mine doesn't turn into a weapon or anything..."
- ↑ UNDER NIGHT IN-BIRTH II [Sys:Celes], Izumi, Unique win quote against Linne, Chaos and Phonon - "That thing you've got tamed there... Is it anything like my fish? I don't see too many like her out here, so I'd love to talk with you sometime. About, you know, taking care of pets and whatnot."
- ↑ UNDER NIGHT IN-BIRTH II [Sys:Celes], Chaos, Unique win quote against Izumi - "His name is Azhi. Yes, I know it sounds like the Japanese word for "mackerel." No, he's not a fish--It's not even spelled the same, for crying out loud."
- ↑ UNDER NIGHT IN-BIRTH II [Sys:Celes], Arcade Mode, Ogre
- ↑ UNDER NIGHT IN-BIRTH II [Sys:Celes], Izumi, General win quote 12 - "I'm sorry, but I have to get back to my dorm early tonight. Slipping out without permission is a big no-no. Anyway, the Abyss is waiting, so if you'll excuse me..."
- ↑ 11.0 11.1 11.2 11.3 2025 Interview with EvoFGC
| Playable Characters | Hyde · Linne · Waldstein · Carmine · Orie · Gordeau · Merkava · Vatista · Seth · Yuzuriha · Hilda · Chaos · Nanase · Byakuya · Phonon · Mika · Wagner · Enkidu · Londrekia · Tsurugi · Kaguya · Kuon · Uzuki · Ogre · Izumi |
|---|---|
| Guest Characters | Eltnum · Akatsuki |
| Non-Playable Characters | Adelheid · Azel · Azhi Dahaka · Chiharu · Chitose · Elefee · Higan · Hiroha · Hollow God · J.J. · Joker · Komatsu · Kuu · Lex Bartholomeus · Meuniel · Murayama · Radiata · Reflecta · Roger · Sakaki · Sakurai · Silvaria · Strix · Tempest · Tomomi · Tsukuyomi · Zohar |