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Carve it into your soul, kid!
Major plot spoilers follow.
Miru & Kaku
Screen shot 2012-08-08 at 12.56.53
Real World
Debut: Hatoful Boyfriend: Holiday Star
Theme: Jingle Bells
Character Voice: N/A
Heartful Stats
Birthday: 24 December[1]
Gender: Unknown
Species: Unidentified
Age: 11-19 *
Occupation: None
Status: Alive *
Eye Color: Black
Hair Color: White... skin/fur
Also known as
  • The Christmas Thieves[1]
  • Twin Stars of the Holy Night[2]
  • Mirucurlus & Kakutinus[2]

Miru & Kaku (ミル・カク) debut in the first episode of Hatoful Boyfriend: Holiday Star, "The Christmas Thieves Attack!".

They are never seen without the other, and are mischievous with a great love of Christmas. They like to annoy and pester Shuu.

In the Holiday Star demo, we see them in the infirmary with Yuuya, wishing Merry Christmas. Later, they start the cheering for the Pretty Coores. Shuu was overseas during the whole story.

The main thing they seem to say is "Merry Christmas" (メリクリ), which similarly to Okosan, is translated in brackets.

Early Life

They're lab accidents from the St. Pigeonation's bio lab Ryuuji and Souma worked in.

They were going to be killed when Ryuuji saved them and brought to them a great love of celebrations and Christmas.

Hatoful Boyfriend: Holiday Star

"The Christmas Thieves Attack!"

After an unusual bout of sentimentality, Shuu accepted them into his care after they were discovered robbing Christmas trees from all over town near Christmas time. They ended up transforming the infirmary into something unrecognisably festive.

"Fallen Chronicles: Absolute Zero"

"The Day the Night Slept (Before)"

"The Day the Night Slept (After)"

Hatoful Manga



Absolute Zero - the Forbidden Epic of Fallen Angels

Physical Description

Miru and Kaku are genetically modified creatures that look somewhat resembling of doves, but are bipedal and use their hands. They have round chubby bodies, and are full of energy. They both have golden ankle bracelets that carry Ryuuji's name on them.

Personality and Traits

Miru & Kaku Tank

Miru & Kaku going an extra step to steal the Le Bel Christmas tree.

Mischievous, childish, and full of enthusiasm and vitality. Mentally they behave mostly like children, with no regards for personal space or what's right and wrong. They are absolutely obsessed with Christmas and anything related to it, and will become more and less pumped depending on whether Christmas is close or not. They can read and write, but aren't particularly good at it yet.


Ryuuji Kawara

Shuu Iwamine

Tohri Nishikikouji

Yuuya Sakazaki


Miru and Kaku does not mean anything, aside from their names' initials matching the words "Merry Christmas".


  • Miru and Kaku have existed for far longer than Hatoful Boyfriend has. Originally, they were nothing more than doodles that Moa and Damu came up with and would insert in the corners of pages.

Notes and References



Hiyoko Tosaka · Ryouta Kawara · Sakuya Le Bel Shirogane · Nageki Fujishiro · Yuuya Sakazaki · Okosan · Kazuaki Nanaki · Shuu Iwamine · Anghel Higure · Tohri Nishikikouji


Albert Alain Alkan · Azami Koshiba · Death · Hitori Uzune · Kazuaki-kun · Kenzaburou Urushihara · Kouichi Sasai · Leone JB · Miru & Kaku · Rabu · Ryuuji Kawara · The King


Amazing Tosaka · Brian Pigeon · Chunkichi Kadomae · Domingo Santos · Hoppe · Kanta · Kokoro · Mino Ichijou · Momo · Nacchin · Pelicano · Punkgeons · Pyonpyon · Sweet Shuu · Terry Mukai · Tsukkun · Yuki Shirojiro · Yuusuke