Abyss School Guide | How To Unlock All SeYoung Outfits

A guide on how to get all the SeYoung outfits in Abyss School.

Game Guide by Sabi on Mar 10, 2025

SeYoung, Abyss School's adorable side character, possesses several outfits that you can get by advancing in-game, updating, and unique in-game conditions. Some of her outfits are unlocked naturally as you proceed through the storyline.

However, some outfits require you to complete side content, special events, or post-game quests. This walkthrough will show you how to get all the outfits.

Default School Uniform

Abyss School Guide, Default School Uniform

This is SeYoung's initial costume when you first start Abyss School. SeYoung wears a regular school uniform with a white top, red ribbon, and a black skirt.

This is her default appearance, which is given automatically at the start and does not change unless you have alternative costumes. It is also her default appearance in the early stages of the game.

Damaged School Uniform

Abyss School Guide, Damaged School Uniform

This costume is randomly unlocked when SeYoung suffers in-game damage. Her school uniform will begin to tear up gradually.

SeYoung's school uniform gets torn apart with large tears and slits both on top and bottom. This costume naturally equips from the game combat or puzzle content, so manually do not do it.

Swimsuit Costume

Abyss School Guide, Swimsuit Costume

In-game, you will be able to obtain the swimsuit by completing a special event in the pool area of the school. It was included in update 1.2v, so make sure you are using the most current version. If you cannot find it in your first playthrough, you can also obtain it through the post-game content.

SeYoung wears a blue one-piece swimsuit with little adornment. Like the school uniform, the swimsuit is three-stage damaged, so do not be surprised if it changes whenever SeYoung is hurt during the battle.

Gym Uniform

Abyss School Guide, Gym Uniform

After completing all of the side quests on Floor 3 of the Abyss, you will be able to unlock the gym costume. These quests include puzzle-solving and talking to various NPCs around the floor. The gym uniform is a white T-shirt with red trim and shorts, which is typical gym wear.

Like other costumes, the gym uniform has damage levels. However, the changes are not as drastic as those in the school uniform.

Cat Shirt Costume

Abyss School Guide, Cat Shirt Costume

To obtain the CatShirt costume, complete a secret event on Floor 5. To trigger the event, search for an item associated with a cat and go near a hidden NPC. The costume is a loose, casual T-shirt with a beautiful cat design on the front.

In contrast to her school uniform, the cat shirt gives SeYoung a more relaxed and warm appearance. Compared to school uniforms and swimsuits, the cat shirt has no apparent damage. It is cosmetic attire.

High Society School Uniform

Abyss School Guide, High Society School Uniform

High Society School Uniform is available as a post-launch DLC update. You will acquire it if you finish the New Game+ mode and unlock the secret ending. This is a superior version of the school uniform, with a sophisticated design and a richer look.

The look is more sophisticated, with a high-end, sleek appearance. The High Society School Uniform is cosmetic only and has no effect on gameplay. It's a stylish choice for players who want to change SeYoung's appearance.

Maid Outfit (DLC Only)

Abyss School Guide, Maid Outfit (DLC Only)

The maid costume is available only as a pay DLC pack. The DLC must be purchased before it becomes available in the game's store. The maid dress is a traditional black-and-white print with an apron, creating a Victorian appearance on SeYoung.

Some dialogue can change slightly while in this costume, but it has nothing to do with the overall story. As with the other costumes, the maid outfit has some slight differences in damage.

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