Project SEKAI×Sario Characters was a collaboration between Project SEKAI and the Sanrio franchise.
The collaboration featured cards for each Project SEKAI character matched with different characters from the Sanrio franchise - six being 4☆ cards and the rest being 2☆ cards. These cards were acquirable through the Say Hello in the SEKAI ♡ Lovely Encounter Gacha.
Sanrio
Sanrio is a popular franchise and entertainment company who are known for creating over 450 characters. Some well known examples being Hello Kitty, My Melody, Cinnamoroll, Gudetama, Aggretsukko and many more.
Login Campaign
Players who logged in between December 5, 2023 12:00 JST and December 19, 2023 23:59 JST received Hello Kitty's Apples.
Login Story
During the collaboration period, a short story conversation was available upon logging in between December 5, 2023 12:00 JST and December 19, 2023 23:59 JST.
Puroland Sekai
The Puroland Sekai is a time-limited Sekai, available only during this collaboration. A select few characters from both Project SEKAI and Sanrio appear in this Sekai - aligning with the limited 4☆ cards released for the event.
Gacha
Part of this collaboration was the Say Hello in the SEKAI ♡ Lovely Encounter Gacha. This gacha started from December 5, 2023 and ended on December 19, 2023 - running for two weeks.
Players were able to obtain twenty-six unique limited cards via this gacha, six being 4☆ cards with limited character costumes as well as virtual live costumes and twenty being 2☆ cards.
Each card features a specific Sanrio character.
Cards
| ID | Thumbnail | Card name | Character | Status | Skill |
|---|---|---|---|---|---|
| 801 |  | feat. Hello Kitty | Hatsune Miku | Limited | Scorer |
| 802 |  | feat. Pompompurin | Tenma Saki | Limited | Perfect locker |
| 803 |  | feat. My Melody | Momoi Airi | Limited | Scorer |
| 804 |  | feat. Pochacco | Aoyagi Toya | Limited | Scorer |
| 805 |  | feat. Cinnamoroll | Otori Emu | Limited | Healer |
| 806 |  | feat. Kuromi | Shinonome Ena | Limited | Healer |
| 807 |  | feat. Dear Daniel | Hoshino Ichika | Limited | Scorer |
| 808 |  | feat. Marron Cream | Mochizuki Honami | Limited | Scorer |
| 809 |  | feat. Sugarbunnies | Hinomori Shiho | Limited | Healer |
| 810 |  | feat. KIRIMI-chan. | Hanasato Minori | Limited | Perfect locker |
| 811 |  | feat. Tuxedo Sam | Kiritani Haruka | Limited | Scorer |
| 812 |  | feat. Wish Me Mell | Hinomori Shizuku | Limited | Perfect locker |
| 813 |  | feat. Corocorokuririn | Azusawa Kohane | Limited | Scorer |
| 814 |  | feat. Lloromannic | Shiraishi An | Limited | Healer |
| 815 |  | feat. Bad Badtz-Maru | Shinonome Akito | Limited | Perfect locker |
| 816 |  | feat. Kerokerokeroppi | Tenma Tsukasa | Limited | Healer |
| 817 |  | feat. U*SA*HA*NA | Kusanagi Nene | Limited | Scorer |
| 818 |  | feat. Hangyodon | Kamishiro Rui | Limited | Perfect locker |
| 819 |  | feat. Marumofubiyori | Yoisaki Kanade | Limited | Scorer |
| 820 |  | feat. Cogimyun | Asahina Mafuyu | Limited | Perfect locker |
| 821 |  | feat. Bonbonribbon | Akiyama Mizuki | Limited | Scorer |
| 822 |  | feat. Little Twin Stars | Kagamine Rin | Limited | Healer |
| 823 |  | feat. Little Twin Stars | Kagamine Len | Limited | Perfect locker |
| 824 |  | feat. My Sweet Piano | Megurine Luka | Limited | Perfect locker |
| 825 |  | feat. nya・ni・nyu・nye・nyon | MEIKO | Limited | Scorer |
| 826 |  | feat. Ahiru no Pekkle | KAITO | Limited | Scorer |
Costumes
| Thumbnail | Costume name | Gender | Release date | Acquisition method(s) | Accessory | Unique accessory | Unique hair |
|---|---|---|---|---|---|---|---|
 | Apple Picnic Coordination | Ladies | 2023-12-05 |
| Yes | Yes | No |
 | Relaxing Coordination | Ladies | 2023-12-05 |
| Yes | Yes | No |
 | Lots of Ribbons & Strawberries Dress | Ladies | 2023-12-05 |
| Yes | Yes | No |
 | Strolling Cardigan Style | Men | 2023-12-05 |
| Yes | Yes | No |
 | Soft & Fluffy Maid Dress | Ladies | 2023-12-05 |
| Yes | Yes | No |
 | Stylish Girly Dress | Ladies | 2023-12-05 |
| Yes | Yes | No |
4koma
Multiple 4komas were released during the time period of the collaboration.
-
「可愛いもの博士」
-
「培われた対応力」
-
「おそろい」
-
「みんなを笑顔にするための」
-
「膨らむイメージ」
Timeline of events
October, 2023
- The collaboration was first announced.
November 24, 2023
- Trained 4☆ cards' illustrations were revealed on Project SEKAI Broadcast Station's 3rd episode.
- Full-body previews of 2☆ cards' illustrations & virtual live avatar accessories and full-body costumes were revealed on Project SEKAI RADIO's 3rd episode.
December 5, 2023
- Collaboration began.
- Sanrio Characters Collaboration Login Campaign began.
- Part 1 of the Sanrio Characters Collaboration Login Story can be viewed upon first login during the collaboration.
- Say Hello in the SEKAI ♡ Lovely Encounter Gacha began.
- Puroland Sekai can be visited.
December 19, 2023
- Collaboration ended.
- Sanrio Characters Collaboration Login Campaign ended.
- Part 2 of the Sanrio Characters Collaboration Login Story can be viewed upon first login after the collaboration ends.
- Say Hello in the SEKAI ♡ Lovely Encounter Gacha ended.
- Puroland Sekai can no longer be visited.
