Kumikana

Kumikana (組仮名, ) is a syllabary, mainly used in Hinomoto. It is a phonetic lettering system similar to the other syllabaries of Yashiman, Hyōkana and Nishikana. The word kumikana means "combined" kana.

In kumikana, each consonant group and vowel group is represented by a character, with characters representing vowels termed "roots" and consonants termed "stems". Roots and stems are combined in pairs to create each syllable in the Yashiman language. "N", the only single consonant, is the only character with a unique root.

Kumikana was developed in the Shogunate of Hinomoto in the 18th century as part of reforms due to a perceived degradation of Hinoan traditional literary culture (which previously only used koji) due to the popularity of Yamatai-developed Hyōkana and Nishikana. Since its adoption in the late 18th century, Kumikana has been used as the main writing system of the Hinoan dialect of Yashiman. Though the usage of Kumikana decreased after the merger of Hinomoto and Yamatai in the mid-19th century, Kumikana experienced a resurgence during the Chiseian occupation after the Second Escar-Varunan War. Kumikana is still widely used in Hinomoto in the modern day, though is often used alongside Nishikana for the understanding of Chiseian and Yamataian people.

Popular Culture
In Yamataian popular culture, Kumikana is often used as a visual shorthand to represent a future development of the Yashiman language. Many science fiction and future-set works use Kumikana to depict futuristic displays and writing. It is not clear when the trend began, but the Dōga series Re:Impact featured a character writing in Kumikana to imply that Hinomoto had attained dominance over the rest of Yamatai in the post-apocalyptic setting of the show. In particular, a modified form of Kumikana that first appeared in the famous science fiction epic Frontier Zero has become highly popular due to its stylised block characters, and has been copied numerous times in various films and Dōga.