[4%] I tossed and turned.I was like a huge worm wriggling ► Missing space.
[11%] I was glad I was alone. If I’d woken up to that prince’s ► The I character alone in If isn't in italic format.
[17%] The skin that had been under the rope, but it didn’t ► It feels like there's missing words here. Already reported.
[24%] me! I can sneak out now! Supressing my excitement, ► It should be Suppressing.
[74%] “Owwwww! What was that!?” Turning towards where ► It should be ?! for consistency.
[25%] participating in the Guardian trials in this town, ► It should be trial (singular).
[34%] that I will the one who become s the Guardian ► A couple of issues:
It should be will be.
It should be becomes (remove space).
[39%] “A single Royal Knights fight with the force of an ► It should be Knight fights (move the s).
[46%] Sepith turned to me. “You are n ’ t off the hook ► It should be aren’t (remove spaces).
[49%] of House Denning were treated as an adult once ► It should be as adults?
[53%] participating in the trials himself. It must’ve been ► It should be trial (singular).
[64%] The woman started placed down our meals onto ► It should be started placing, or just placed (remove started).
[70%] “So then, rookie.The Knight Commander has high ► Missing space.
[72%] I sighed inwardly She had no clue about why I ► Missing period.
[73%] Sepith sided with the Dustour so that he could ► It should be the Dustour Empire, or simply Dustour (remove the).
[78%] didn’t need to point that out, I thought, annoyed . ► Remove extra space.
[85%] everyone who came in the door with a beaming ► It should be from the.
[88%] but that the girl was a first-year student at Kirsch ► Missing period.
[Generic] The topic link at the end of the part is still broken (missing slash / after domain). 😋
[3%] our own food and drinks,and Yuki came with ► Missing space.
[26%] masculine that it really hits the mark for me ► Missing period.
[59%] was the last time you did it with Momota-kun? ► The dialogue's closing double quote is missing.
[84%] It’s rich coming from annoying hardcore virgin!” ► It should be an annoying.
[88%] I’m thirty-four-years-old... I want to cherish ► It should be thirty-four-year-old (singular; hyphens) or thirty-four years old (plural; hyphen).
[31%] Do you think you’ll be able to Sans-Terre soon, ► It should be return to Sans-Terre.
[66%] of firewood either, why didn’t you even come?” ► It should be did.
[71%] appreciate that, but doesn't it interfere with your ► It should be doesn’t (different ’ ).
0% - This meant that there was something wrong with Sara's declaration - In the context of the sentence, shouldn't it be "nothing wrong" instead?
15% - visit the mistress's family and stay with her." - Two points. First, by convention, you don't need the extra s after the apostrophe when the possessive ends in an s already. Second, since the dialogue is continuing in the next paragraph with the same speaker, you don't need the ending quote.
[0%] for truly special occasions.Even members of the royal ► Missing space.
[66%] attempt to use Royal Degree. Analyze Eye informed ► It should be Decree.
[69%] only thing he could do was again use Royal Decree. ► Maybe use again (switch around).
[91%] Mara Pisuna/Demon Lord-ification, Concealment ► The previous instance was Lordification (no hyphen). Update either one to match.
[99%] he’s now gone. So I can’t fulfil that dream of mine ► It should be fulfill (US spelling).
[0%] The kingdom's locale meant -> location; locale doesn't sound right there.
[58%] significantly more than Aura [...] possessed -> than possessed by Aura, [...] ...just a suggestion to avoid leaving one lone word orphaned at the end by the insertion of the aside...