Ametsuchi no Uta 

A tale of two siblings; one unconventional, the other harboring a great secret. Notes: Based on the Japanese poem Ametsuchi no Uta (天地の歌), authored in the 9th century AD, credited as being the oldest perfect pangram in the Japanese language. This work was published in the 3rd issue of the "good! Afternoon" in 2016 Winner of the 2015 winter-season Afternoon Shiki-sho Award