Ofuro

Classification and Dialects
Ofuro conlang is an endangered language spoken in the リョウキョウ (Ryu'ukyu'u) Islands, influenced by Japanese

Phonotactics
(C)V(R), R=(m), n, s, (h)

Japanese Assimilation Script
When the Japanese colonized the Ryukyu island, they went with a katakana representation

e/ei = i+i Katakana

o/ou = u+u Katakana