There is some amount of game jam jank (frequent punctuation & capitalization errors, the menus wiggling strangely when hovered due to the outlines of the buttons toggling, the small text box forces long lines to be split across multiple), but it's a pretty functional piece on the whole. The art has its charms, even if the backgrounds feel a little too flat and simplistic, and the narrative arc works.
It does feel like the characterization stumbles a bit. Though the protagonist's most prominent trait is his devotion to his duty as a knight, it feels like all that is given up pretty easily for the sake of a person he's only known for a few days; the story doesn't really go out of its way to mine the premise for all the drama and tension it could provide. Likewise, Charles's interest in him comes off as a bit sudden, considering how risky the friendship is from his point of view.
There is plenty of setup and in-text justification for both of these things, but the beats feel more believable intellectually than emotionally – perhaps the two could have had known each other previously instead of only meeting now, or the text could have surfaced the understated romantic/sexual tension between them more to explain the connection. I'm not sure if what happens is fully satisfying like this.