Here's Kūkionseigaku Arial. The only new glyph I had to vectorize in Inkscape is the palatal H glyph. Sounds: a ai aɯ i iɯ ɯ ɯi v~β e eɯ o oi k ɡ s z~dz ɕ ʑ~dʑ t d tɕ ts n ɲ h p b ç ɸ m j ɾ w~ɰ ɴ~ŋ~ɰ̃ ː
Credit to Aircat (@AlfabetonsOfficial) for Kūkionseigaku.