Graduation Day is a Reoccurring Time-Limited A-Tier Costume for the "Prisoner", Luca Balsa that is part of the "Once" series. The costume was originally introduced and sold in the Illusion Hall from February 7th to March 5th, 2024.
Availability[]
As it is not a true Limited Costume (which are denoted by the "limited" tag found in the top right of certain card icons), it can return to the Illusion Hall shop multiple times.
- It was originally available for purchase from February 7th to March 5th, 2024.
- It returned for purchase during the Chinese 7th Anniversary from March 27th to April 23rd, 2025.
Appearance[]
Physical[]
TBA
Outfit[]
TBA
Transmission Box[]
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Special Effects[]
TBA
Design Notes[]
Official Website[1][]
He proved his worth with his intelligence and ability, but the future of genius may not be bright. Young people will eventually pursue their dreams, but only hope that everything they do will be smooth.
The youth of the past was in his prime
As a genius with excellent grades, "Prisoner" also deeply loves invention research. Graduation day is a major node in his life, and it should be the place where his dreams take off. The new Once series of costume "Prisoner" - Graduation Day will give us a glimpse into his past.

In the poster, a gorgeously dressed "prisoner" carefully observes the mechanical box in his hand in a room equipped with various experimental equipment. This is an invention he is proud of. Warm light caressed his face through the window, and the slightly raised corners of his mouth showed the youth's high spirits.
Unique craftsmanship, hymn to dreams
The "prisoner" wore an exquisite graduation gown, a white shirt with a gray vest covered in exquisite dark patterns. The slightly unbuttoned collar of the shirt was a black cross tie, and he was a little arrogant in his freedom. There is a golden badge on the chest of the vest, four bright rubies are inlaid on it, and the drop-shaped pearl pendant decoration below adds a bit of nobility and elegance. Wrapped around his waist is his dark brown suit jacket. The golden embroidery pattern is clearly visible on the hem. The two cuffs are tied together, which is also a unique costume.

The "prisoner" gathered his hair back into a small ponytail, which was clean and neat. He wears retro mechanical glasses, with the lenses covered with gears and other decorative objects, echoing his love for invention. A pair of snow-white gloves facilitates the processing and production of various mechanical parts. He was smiling, obviously looking forward to the day when he would graduate and start a new stage in his life.
Happy graduation, Luca
Great inventions require a long period of silence, and love is his best teacher. For the "prisoner", studies are not the end of life, invention and research are his lifelong pursuit.
On this important day, the future great inventor has the honor to invite you to witness it.
Social Media[2][]
Design Idea Plans
In Luca's Backdrift Series Costume, he is returned to the beginning and doesn't discover the life-changing manuscript. He's attracted by more novel ideas, and leaves behind the obsessions and regrets of his father's generation as he walks his own path. He is smart, optimistic, and cheerful. He understands the burdens placed on him by his family and bloodline, but readily accepts them, using them to fuel his work. He completes his studies according to his mother's expectations, and takes it as an opportunity to broaden his perspectives, meeting more like-minded fellows in a peaceful and fortunate manner. This time, his journey to science and truth is no longer full of loneliness, misunderstandings, hostilities, and grievances.[3]
Design Idea Sketch

In the first version of the concept, we chose the third option and adjusted the clothing style to be more realistic.

After refining the first version, we believe that the hairstyle can be neatly styled to suit his identity. The design of clothing details and patterns are currently relatively casual and lack a sense of sophistication and high-end. After we adjusted these, we finally added special effects that fit the theme, and completed the design of the A Costume "Prisoner" - Graduation Day.

Model Details Description
Great inventions require long silence, and love is my best teacher.

- He hurried back to the laboratory from the ceremony and took care of his fine hair. With a little confusion, the exquisite single-sided glasses allowed him to observe everything he loved more clearly. His smile is confident and calm, without a trace of haze.
- The family crest shines brightly on his chest, and it is obvious that he will become the pride of everyone in the near future.
- Before he could even change out of his graduation gown, his formal gloves were already stained with engine oil, but he didn't care. He had something more dazzling than his exquisite clothes.
- The gems set in the center of the metal gear form the same family crest symbol as the brooch. This is his first successful experiment, but it is destined not to be the last.
Showroom Interface Design

He held the old design drawing and fell into deep thought, but he quickly threw it behind him. The puzzles from the past could not limit him, and he would have better ideas.

He adjusted his clothes slightly, and his fingertips wearing elegant dress gloves danced lightly on the keys. It was his favorite tune, pointing to the infinite possibilities of the future.
In-Game Display

The glory of his family and his extraordinary wisdom will become a golden halo surrounding him, providing him with unlimited creative power and source of inspiration.
Trivia[]
- "Prisoner"'s Once Series costume was originally announced in the Chinese 4th Anniversary Broadcast on March 19th, 2022. At this time it was stated to be delayed, before being released almost 2 years later.
Gallery[]
Concept Art & Icons[]
Promotional Art[]
Merchandise[]
Other Languages[]
| "Graduation Day" in Other Languages | |||
|---|---|---|---|
| 简体中文 (Simplified Chinese) |
毕业日 (Bìyè Rì) |
Graduation Day | |
| 繁體中文 (Traditional Chinese) |
畢業日 (Bìyè Rì) |
Graduation Day | |
| English | Graduation Day | ||
| Español (Spanish) | |||
| Bahasa Indonesia | |||
| 日本語 (Japanese) | |||
| 한국어 (Korean) | |||
| Bahasa Melayu | |||
| ภาษาไทย (Thai) | |||
| Tiếng Việt (Vietnamese) | |||
References[]
[]
| "Prisoner" | "Prisoner"/Lore | "Prisoner"/Cosmetics | "Prisoner"/Gallery |
| Tool | External Traits | ||
| Transmission Box | Circuit Control • "Conductor" • Super Circuit • Obsession | ||
| Costumes | |||
| S-Tier (Gold) | Fugue for Dawn • Osamu Dazai • Paranormal Detective • The Viper | ||
| A-Tier (Purple) | Auditorium • Ben-Hur • Electrolysis • Graduation Day • L • OPH.LUCA • Rantaro Amami • Ray • Rice • Trembling Chord • Winter Cicada | ||
| B-Tier (Blue) | Boidae • Eccentric • "Hermit Crab" • Isle of Perpetual Motion • Mercè • Moon bound • Racing Mechanic • "Receptionist" • Silver Shell • The Zealot • Tribin the Halfling | ||
| C-Tier (Green) | Original • Worn Clothes • Gray Coating • Moldy Bread • Yellow Wall | ||
| Accessories | |||
| S-Tier (Gold) | Crystal Palace • Infinity • Osamu Dazai's Favorite Book | ||
| A-Tier (Purple) | Art of Science • Gloomy Ghost | ||
| B-Tier (Blue) | Electrical Relay • Handcuffs • L's Mic • Ray's Book • Still | ||
| Other Customizations | |||
| Graffiti • Emotes • Standby Motions | |||





















