@SnowdropLily, as much I also wanted it revert back to the first chapter art. voicing this on this site is useless you know. The author wouldn't even read the comment.
Either I'm going to assume it was a mistranslation for 'callligraphy' or MC was still drawing a plant and the calligraphy piece was just a doodle he left on his table while he was holding his drawing book.
also, who the heck owns that bookstore, getting magical and precious books and then just selling them to a kid like they were nothing. He's got to be someone important.
I feel like some explanation was omitted. How did he get the skill to understand everything that the learns? What about this experience of hearing a ghost that MC mentioned?