February 23 is Koharu's birthday!
We're holding various events and Orders to celebrate Koharu's birthday in SWORD ART ONLINE: Integral Factor! We're holding the "Koharu Birthday Festival"!
Koharu is a central figure in the progression through Aincrad, as well as an incredible partner to the player.
Let's all celebrate her birthday together!
We'll be decorating Aincrad all over with Koharu, through 23 stamps, 23 panels, and more!
Don't miss the free Order with a guaranteed ★4 Koharu starting at February 23 (Sun), 4:00 (JST/UTC+9)!
Koharu Birthday Festival Defense Battle
Koharu takes the Winter Sky Stage without even meaning to.
Defend Koharu as she dances on the stage to the music!
Her current appearance will be applied here, so try enjoying lots of different outfits together with Koharu!
Period
February 23, 2025 (Sun) 0:00 - Before the March 12, 2025 (Wed) maintenance (JST/UTC+9).
Koharu Masterpiece Showcase
It sounds like illustration panels featuring Koharu have been placed all around Aincrad.
Use hints to find their related panel and get rewards at your final destination!
Period
February 23, 2025 (Sun) 0:00 - Before the March 12, 2025 (Wed) maintenance (JST/UTC+9).
Flower Fest
It may not be spring quite yet, but strange monsters with flowers on their heads have appeared!
Defeat them to get Flower Bracelets, so gather them and exchange them for rewards!
Period
February 23, 2025 (Sun) 0:00 - Before the March 12, 2025 (Wed) maintenance (JST/UTC+9).
Happy Dungeon with Koharu
A special Koharu Birthday Festival Happy Dungeon is here!
It will be open for longer than normal Happy Dungeons, and you can get up to 500 Arcana Gems and 350,000 Col from it!
Period
February 23, 2025 (Sun) 4:00 - Before the March 12, 2025 (Wed) maintenance (JST/UTC+9).
Koharu's Birthday Order
All ★4 Skill Records are Koharu!
Featuring new ★4 Skill Records on Step 2 and Step 3!
Koharu's Birthday Order is here!
Duration
February 23, 2025 (Sun) 0:00 - March 4, 2025 (Tue) 23:59 (JST/UTC+9).
Free Once Daily 100% ★4 Koharu Order
It's a ★4 Koharu only free Order to celebrate Koharu's birthday!
Don't miss the Koharu-filled "★4 Koharu Guaranteed Free Once Daily Order"!
Period
February 23, 2025 (Sun) 4:00 - March 1, 2025 (Sat) 3:59 (JST/UTC+9).
Koharu Character Panel Placement
Koharu character panels have been placed all around Aincrad!
There are almost too many to count, 23 in total!
Try taking a screenshot together with them if you come across one!
Placement Period
February 23, 2025 (Sun) 0:00 - Before the March 12, 2025 (Wed) maintenance (JST/UTC+9).
Koharu's Hairstyle Added
As of midnight on February 23, 2025 (Sun) (JST/UTC+9), Koharu's hairstyle has been added to player hairstyle choices!
You can now select Koharu's hairstyle from Makeup or when creating a new character.
* If this hairstyle does not appear on the list, please try rebooting the app.
This hairstyle is only for female characters.
Arcana Gem Gift
Log in on the day of Sachi's birthday to get a gift of 250 Arcana Gems!
Use them for yourself, or use them for Koharu!
Time Limit
Available until February 23, 2025 23:59 (JST/UTC+9).
Koharu Stamp
We're adding 23 Koharu stamps to go with Koharu's birthday!
All of them are adorable, so make sure to use them if you get a hold of them!
Here is a list of stamps you can get during the Koharu Birthday Festival.
| Stamp Name | Stamp Displayed | How to Get |
|---|---|---|
| Koharu Stamp 1 |  | Koharu Birthday Festival |
| Koharu Stamp 2 |  | Koharu Birthday Festival |
| Koharu Stamp 3 |  | Koharu Birthday Festival |
| Koharu Stamp 4 |  | Koharu Birthday Festival |
| Koharu Stamp 5 |  | Koharu Birthday Festival |
| Koharu Stamp 6 |  | Koharu Birthday Festival |
| Koharu Stamp 7 |  | Koharu Birthday Festival |
| Koharu Stamp 8 |  | Koharu Birthday Festival |
| Koharu Stamp 9 |  | Koharu Birthday Festival |
| Koharu Stamp 10 |  | Koharu Birthday Festival |
| Koharu Stamp 11 |  | Flower Fest |
| Koharu Stamp 12 |  | Flower Fest |
| Koharu Stamp 13 |  | Flower Fest |
| Koharu Stamp 14 |  | Flower Fest |
| Koharu Stamp 15 |  | Flower Fest |
| Koharu Stamp 16 |  | Flower Fest |
| Koharu Stamp 17 |  | Flower Fest |
| Koharu Stamp 18 |  | Flower Fest |
| Koharu Stamp 19 |  | Koharu Masterpiece Showcase |
| Koharu Stamp 20 |  | Koharu Masterpiece Showcase |
| Koharu Stamp 21 |  | Koharu Masterpiece Showcase |
| Koharu Stamp 22 |  | Distributed as Present |
| Koharu Stamp 23 |  | appy Dungeon with Koharu |
Koharu Stamp 22 will be distributed as a present.
It can be accepted until March 12, 2025 (Wed) maintenance (JST/UTC+9), so don't forget to pick it up!