Koibito-tachi no Happy Birthday

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**Koibito-tachi no Happy Birthday** is a CD exclusive song in the *Love Series*, appearing to concern the further relationship development between Sota Mochizuki and Akari Hayasaka. The song was first released commercially, as the coupling track in the single *Heroine Ikusei Keikaku / Koibito-tachi no Happy Birthday* released at Comic Market 96. It later received a seiyuu version with Yuki Kaji and Kana Asumi on the third compilation album *Sukisugite Yabai. ~Kokuhaku Jikkou Iinkai Character Song Collection~*, which was released on January 15, 2020.

## Song Information

### Released

August 12, 2019 (Vocaloid ver.)
January 15, 2020 (Seiyuu ver.)

### Lyrics and Composition

Gom (lyrics, composition)
shito (lyrics)

### Illustration and Movie

Yamako (primary visual)
Rinami Rai (video)

### Music

HoneyWorks (arrangement)
Oji (guitar, bass)
Keiki Uto (keyboard)
Gom (programming)
Komiyama Rio (programming)

### Sung by

Hatsune Miku, GUMI
Yuki Kaji, Kana Asumi

### Album

Sukisugite Yabai. ~Kokuhaku Jikkou Iinkai Character Song Collection~

### Single

Heroine Ikusei Keikaku / Koibito-tachi no Happy Birthday

## Lyrics

* Kanji
* Romaji

君の大事な日

ハピバおめでとう

誕生日祝いましょう

料理振る舞おう

悩んでる？怒ってる？

何かしちゃったかな

初めて招待して

キスしてめらうプラン

緊張しちゃうけれど

支えてあげよう！

大好き

ハピバ Happy Happy Birthday Yeah

幸せものだね♡

カメラに向かってせーのピース

仲良くしてくれてありがと

ハピバ Happy Happy Birthday Yeah

乾杯しちゃおうよ

今日の主役は君だよ　Oh　Oh

生まれてきてくれてありがと

Happy Birthday

誕生日祝いましょう

君の好きな場所

念願の夢の国

お揃いゼッタイ

はしゃぎ過ぎな君との

待ち時間も楽しい

ちょっと冷える手のひら

口実になる

あっためて

ハピバ Happy Happy Birthday Yeah

特別な日だね

お手を拝借　せーのでクラップ

一緒にいてくれてありがと

ハピバ Happy Happy Birthday Yeah

アピールしちゃおうよ

今日の主役は君だよ　Oh　Oh

生まれてきてくれてありがと

Happy Birthday

来年もまたい祝いさせて

忙しくても約束ね

プレゼントが足りない

キスしてもらうプラン

緊張しちゃうけれど

キスしてもいいかな

大好き

ハピバ Happy Happy Birthday Yeah

幸せものだね♡

カメラに向かってせーのピース

仲良くしてくれてありがと

ハピバ Happy Happy Birthday Yeah

乾杯しちゃおうよ

今日の主役は君だよ　Oh　Oh

生まれてきてくれてありがと

Happy Birthday

kimi no daiji na hi

hapiba omedetou

tanjoubi iwaimashou

ryouri furumaou

nayanderu? okotteru?

nani ka shichatta ka na

hajimete shoutai shite

kisu shite morau puran

kinchou shichau keredo

sasaete ageyou!

daisuki

hapiba Happy Happy Birthday Yeah

shiawase mono da ne♡

kamera ni mukatte see no piisu

nakayoshite kurete arigato

hapiba Happy Happy Birthday Yeah

kanpai shichaou yo

kyou no shuyaku wa kimi da yo Oh Oh

umarete kite kurete arigato

Happy Birthday

tanjoubi iwaimashou

kimi no suki na basho

negan no yume no kuni

osoroi zettai

hashagisugi na kimi to no

machi jikan mo tanoshii

chotto hieru tenohira

koujitsu ni naru

attamete

hapiba Happy Happy Birthday Yeah

tokubetsu na hi da de

ote wo haishaku see no de kurappu

issho ni itekurete arigato

hapiba Happy Happy Birthday Yeah

apiiru shichaou yo

kyou no shuyaku wa kimi da yo Oh Oh

umarete kite kurete arigato

Happy Birthday

rainen mo mata oiwaisasete

isogashikute mo yakusoku ne

puresento ga tarinai

kisu shite morau puran

kinchou shichau keredo

kisu shite mo ii ka na

daisuki

hapiba Happy Happy Birthday Yeah

shiawase mono da ne♡

kamera ni mukatte see no piisu

nakayoshite kurete arigato

hapiba Happy Happy Birthday Yeah

kanpai shichaou yo

kyou no shuyaku wa kimi da yo Oh Oh

umarete kite kurete arigato

Happy Birthday