this happened when bulgaria was little and still living with his dad and his twin bro (he wasn't danube bulgaria yet cuz he hadn't gone to the danube yet)
little bulgaria: dad look I learned to write I wrote something *holds up a piece of parchment with bulgar runes on it*
old great bulgaria *is busy with something, doesn't even look*: what did u write
little bulgaria: idk I can't read yet
nowadays, he still can't read them as bulgar runes aren't deciphered yet
maybe he could at some point of time (before the creation of the glagolitic and the cyrillic) but then, when he switched to cyrillic, he forgot how to read bulgar runes?
meanwhile volga bulgaria (who wasn't volga bulgaria yet): lol what a loser (but he didn't say this loud cuz their dad was there)