Blue Archive characters celebrating their birthdays in May

네오필

Blue Archive characters celebrating their birthdays in May

Every character in Blue Archive has their own birthday, and if you bring them into the lobby and interact with them on that day, you can hear a special line. On the flip side, if you call a character to the lobby on your own birthday, they’ll have a unique reaction for that too.

So spending time in the lobby with your favorite character on their birthday—and on your own birthday too—is one of the little ways to enjoy Blue Archive​​.

The official Blue Archive channel posts a birthday list every month, which makes it easy not to miss the birthday of a character you like. May 2026 has no less than 11 birthdays, so let’s go through each character’s lines one by one.


Izumimoto Eimi

Version

Her own birthday

Sensei’s birthday

Default

Birthday⋯? Oh, right. I guess there was something like that. You don’t really need to celebrate it. It’s not that important. Hm? But if you still want to celebrate it⋯ th-thank you⋯

So today’s the day you were born, Sensei? Yeah. Then it’s a happy day. If this day didn’t exist, I never would’ve met you.

Swimsuit

Since you said you’d stay with me, Sensei, I put together the highest-efficiency birthday plan possible. I don’t want to waste even a second today.

Happy birthday, Sensei. I was thinking of spending today in the kind of clothes you like… do you have any requests?

Armed

My birthday…… thank you for celebrating it, okay? What would make a good gift? It’s fine. I already got one. A gift called Sensei.

I didn’t forget. Today is your birthday, Sensei. I’ve already secured the area…… so if you’re okay with it, want to go out together? Just the two of us.

Eimi’s birthday is Friday, May 1.


Komikaze Rabu

Version

Her own birthday

Sensei’s birthday

Default

You know, my girls have seemed like they’re hiding something since yesterday. They told me to come because they had something serious to talk about… what could it be?

Huh, isn’t today your birthday, Sensei? Congrats! Make sure you eat lots and lots of good food!

Rabu’s birthday is Wednesday, May 6.


Misono Mika

Version

Her own birthday

Sensei’s birthday

Default

Huh⋯ you knew it was my birthday? U-uh-huh⋯⋯! Thank you⋯⋯ Ahaha⋯⋯ so you saw right through me.

Happy birthday, Sensei! Want me to sing you a birthday song? Hm? You’d be embarrassed?

Swimsuit

Wow~ ahaha…… I got a message saying it was my turn on duty today, so I thought… no way……. I’ll never forget today.

Sen.sei!! It’s your birthday today, right? I wanted to say it to you in person. I’m glad…… we got to meet like this. Happy birthday! I hope it’s a wonderful day……!

Mika’s birthday is Friday, May 8.


Shishidou Izumi

Version

Her own birthday

Sensei’s birthday

Default

Ta-da~ Do you know what day it is today? Ahem! It’s the day you absolutely have to eat something delicious~! Let’s have cake together! I’ll even share it with you, okay?

Sensei! It’s your birthday? Then let’s rent out a café and eat cake all day! I’ll stay with you the whole time!

Swimsuit

Ta-da~! It’s my birthday today. Sensei! So come on, let’s go swimming! Summer’s still a little ways off, but if I’m with you, how could I possibly wait~!

Happy birthday, Sensei! Then, to celebrate, let’s splash around together at Schale today!

New Year

So you remembered my birthday. I’m really happy! I even got cake ready, so let’s eat it together! Hm? You’re saying you should be the one buying the cake for me? What are you talking about, Sensei! On birthdays, the only thing that matters is eating cake! Everything else can wait!

I remembered! Today’s your birthday, Sensei, right? I wrote it down carefully so I wouldn’t forget! Here, here! I even bought cake! Don’t worry! I haven’t sprinkled my special Izumi powder on it yet!

Izumi’s birthday is Monday, May 11.


Asagao Hanae

Version

Her own birthday

Sensei’s birthday

Default

It’s my birthday today! As a birthday present⋯ I’d like a whole day with you, Sensei!

Today is the happiest day ever! Sensei, happy birthday!

Christmas

It’s my birthday today! As for a present… I think I want you, Sensei! Ehehe.

Wow, happy birthday! Yes, I tried putting a gift inside the gift! What do you think? Um…… you mean it’s like a matryoshka?

Hanae’s birthday is Tuesday, May 12.


Igusa Haruka

Version

Her own birthday

Sensei’s birthday

Default

I-I’m sorry for being born! Huh? Y-you’re congratulating me?

H-happy birthday! O-of course, even if someone like me congratulates you, it’ll probably just make you uncomfortable⋯!

New Year

M-my birthday⋯!? Wh-why would you remember something so⋯ insignificant⋯!?

Hap⋯⋯happy birthday to you⋯. I said it quietly so it wouldn’t be unpleasant⋯.

Haruka’s birthday is Wednesday, May 13.


Sunaookami Shiroko

Version

Her own birthday

Sensei’s birthday

Default

My birthday⋯ I didn’t think you’d remember. No, of course I’m happy. Yeah. I mean it.

Happy birthday, Sensei. To mark the occasion, want to go jogging together or something? ⋯You don’t?

Riding

My birthday? ⋯⋯Oh. Has it already come around again⋯ th-thank you.

Today’s your birthday, Sensei⋯⋯? Then, to celebrate, want to go riding?

Swimsuit

Ah, my birthday⋯ You remembered. Thank you, Sensei.

Happy birthday, Sensei. For your birthday meal⋯ would sashimi be okay?

Terror

So it’s my birthday. Thank you. …Sensei, I’d like you to pass along birthday wishes to the me on this side, too.

Happy birthday. If you’re okay with it, we could go riding together… Hm? You’re saying this is the second time you’ve heard that suggestion today?

Shiroko’s birthday is Saturday, May 16.


Wakaba Hinata

Version

Her own birthday

Sensei’s birthday

Default

S-Sensei……. Um……. I, well……. today is……. t-today is my birthday……! S-so today…… could you, um, stay with me the whole time……!?

Sensei, happy birthday! For me too, today is a truly special and important day!

Swimsuit

Ah, my birthday… so you remembered! Thank you… I’m really happy.

Happy birthday, Sensei! I hope that next year on this day, I’ll be able to offer you my congratulations too.

Hinata’s birthday is Sunday, May 17.


Aramaki Yakumo

Version

Her own birthday

Sensei’s birthday

Default

Today is May 18, you know~? Aren’t you forgetting something~? Don’t you have something to say to me? Just what I expected from you, Sensei! I knew you’d remember my birthday!

Well, look who it is—the star of the day. Happy birthday, Sensei. A small gift from me. Here, a book coupon. ……I’ll be waiting for you to use it, after all. Heh. Heh. Hi.

Yakumo’s birthday is Monday, May 18.


Kinugawa Kasumi

Version

Her own birthday

Sensei’s birthday

Default

Sigh…… on my way to Schale, the Prefect Team started chasing me again, seriously! It’s my birthday today, so couldn’t they cut me a little slack?

Oh~! Sensei, today just so happens to be your birthday! It’s a special day, so I’ll come make you a present!

Kasumi’s birthday is Sunday, May 24.


Uzawa Reisa

Version

Her own birthday

Sensei’s birthday

Default

Ah, my birthday? Thank you! Lately, so many people have been congratulating me on it! ……You really do live long enough to see all kinds of things! Even though I’m still only 15!

Happy birthday, Sensei!!! It’s such a special day, so how about going on patrol together!

Magical

Birthday? Whose? Ah! Mine! It’s my birthday! Thank you for celebrating me! Ehe-

Sensei, happy birthday! If I really had magic, I’d want to cast some kind of blessing spell on you! Ehehe-

Lastly, Reisa’s birthday is Sunday, May 31.


Closing

And that wraps up this roundup of Blue Archive’s May birthday characters and their lines.

Even just reading through the lines like this is interesting, because each character’s personality comes through so clearly. It’s also fun to see how the alternate versions start to carry that little sense of the relationship progressing further…

Which character’s lines did you like the most?