Alpabe Runes is a newest legacy international font from Heaven Castro.
It is based on Tex Gyre Termes with the other glyphs taken from IPA Mincho and Frank Ruhl Libre.
It was first seen in the Unicorn Jelly comic strips #126 and #127 where Chou and Lupiko found out the cards in the chest.
She is said that the runes are seperated in four groups; each set has a different writing system, there are 18 Latin alphabets retained from the original, about 3 of them replaced with Hebrew letters, 5 replaced with the Japanese kana characters and the two others replaced with Greek letters.
That's how I've made this font to get intrigued by puzzles, and the reason I made an idea about that.
Unicorn Jelly fans should be using this.