ran in Kadokawa 's Age Premium magazine .
Two other manga have also been published : a four - panel manga by Kanikama was launched in Kadokawa Shoten 's 4 - Koma Nano Ace magazine in 2011 , and a series titled Gakuen Chaika !
ran in Kadokawa Shoten 's Age Premium magazine .
Two other manga have also been published : a four - panel manga by Kanikama was launched in Kadokawa Shoten 's 4 - Koma Nano Ace magazine in 2011 , and a series titled Gakuen Chaika !