We finally get to see the scene she's been hung up on for so long. It's only chapter 3, but the part 5 manga isn't there yet.
And Rasantark is a lefty? Gasp! My head cannon now is he got picked as a knight over Kenntrips for that advantage lol. Of course he is also a muscle head compared to Kenntrips and that probably played a part too.
Now onward to corrections. There's a number of them, but nearly all are minor and don't change the meaning of the text.

Page 1 bottom panel: "Rasantark despaired when he heard you
weren't participating"
Page 4 panel 2: generally people are "in" their x year. Prepositions are tough. "At" is more for specific times while "in" works with larger periods.
Page 6 final text box: "Amidst such chaos and danger, I was left alone in the base..." I suppose you could put a comma after "I" and it works too
Page 12 should read: "But even I was shocked that lady crybaby
had made up for her past shame..."
Page 14 panel 1 has two things: Rozemyne was to be the next Zent's wife, and you can omit "the" before Aub Dunkelfelger. There are many Aubs, so when talking about a specific one the reader/listener should know the article is included: the Aub. Specifing the dutchy (Aub Dunk ect) makes it effectively their name thus no "the" needed. Think of it as
the president vs President Prabowo.
Page 15: WhimsiCat is correct that the text is off, however, the correct conjugation of cast is cast lol. Should read as, "someone who is capable of being cast aside" If Aub Dunkelfelger must go about casting anyone aside, then the Aub casts off the weakest member of the family. Let these three forms of cast be a cast for this broken bit of dialog. Oh shoot that's a different kind of cast all together... Well... I hope I cast a light on these issues. I blame Whimsicat's name for making me feel more whimsical and writing all that.

Page 23 panel 2 can be either: "every time that happened" or "every time that would happen" though considering you use "would" right afterwards I would go with the former.