Volume 10 - Part 2:

[56%] That will not be impossible for the journey back. >> from the context this should probably be possible

Volume 2 - Part 2:

[56%] I mean, serious. >> should be seriously

V7p7
[4%] I discreetly opened the door to the Unlimited Bath behind me, just enough for me to squeeze through. -> since he isn't the one to go in, is it supposed to be them?

V11p9
[54%] The same moment Colette turned behind and her knees buckled -> turned away maybe? Turned behind doesn't sound right.
[54%] It’s Sylvie, Ecchan, Secchan, and...uh, a talking sword? -> It's Ec-chan and Sec-chan throughout part 10.

Volume 9 Part 2:

Cirquista was very generous about investing in would-be heroes in who had bright futures ahead of them.

Cirquista was very generous about investing in would-be heroes who had bright futures ahead of them.

The name Blood is a case of the author using Engrish rather than English imo. The staff has made its choice though. 🙄

Vol. 5 part 9

~13%: that Adonix-san and the other tree guys were quite intimidating at first glance.

I think it’s supposed to be three instead of tree, although using tree here is a little humorous.

that Adonix-san and the other three guys were quite intimidating at first glance.

Volume 1 - Part 8:

[5%] Wouldn’t it be a bit nosier if >> should be noisier

Volume 1 - Part 3:

[6%] White Like had received the mission from Garalate, ► It should be Lake. [59%] scattered and assimilated by the newcomers. The ► It should be were assimilated.

V5P8

I had spend a while rubbing myself with a birch branch to improve my circulation and scrub out any dirt <...>

"Flogging with birch twigs" or something similar?

https://en.m.wikipedia.org/wiki/Birching#Non-punitive_uses

In Scandinavia, the Baltics, Russia and Finland there is a tradition to strike one's own body with soaked birch twigs in the sauna or banya, as a form of massage and to increase blood circulation and open the pores. The twigs are chosen carefully and do not have their leaves removed, and are often softened by keeping them in hot water prior to use. Being struck by the twigs induces a pleasant stinging sensation but very little actual pain.

Volume 3 - Part 5:

[35%] and dump her overdo school assignments on her ► It should be overdue. Already reported. [91%] introduce me to him, won’t you? Pretty please?’ ► The dialogue's closing double quote is a single one. [93%] Claire said, “and see if I can’t arrange a meeting.” ► It should be can?

Volume 10 - Part 9:

[8%] the spell depended on the castor’s skill level. ► It should be caster’s.

6.5

He lightly tapped his chest above his heart.

“over”

Volume 20 - Part 2:

[3%] had heard about,, who came from outside ► Duplicate comma. [49%] of customers will probably double by then” ► Missing period. [58%] But if they cause a commotion, they‘ll be ► It should be they’ll (different ’ ). [60%] enough space for tell stalls or so. It had to ► It should be ten.

Volume 6 Part 6 97%
I said to the two that had woken before me.
“Woken,” in British English, is the past participle not of “wake up” but of just plain old “wake.”
You might be looking for the past part of awaken, which would be awakened.
I said to the two that had awakened before me.
Grammar reference here.

Volume 5 - Part 8:

[22%] but I had my eyes on one item, an earring. ► It should be earrings. Or maybe a pair of earrings? [25%] I can worry about wearing it afterI obtain ► A couple of issues: It should be them? Missing space. [34%] You won’t find these in the catalog All ► Missing punctuation. [56%] “700,00 G! 770,000 G!” the auctioneer called ► It should be 700,000 (missing 0).

Volume 6 - Part 4:

[85%] the necessary magic, Chairman Zola?” Tobias asked, ► It should be a period.

Volume 7 - Part 7:

[39%] >The king and I traversed the hallways of ► Remove extra > at the start. [41%] You two are each other’s\ only remaining ► Remove extra \. [57%] family. \ Surely, it should surely be easy ► A couple of issues: Remove extra \. Duplicate surely. [81%] >“Ash, no matter how hard a situation gets, ► Remove extra > at the start. [87%] But I could say it now.. “I tried my best. I’ve ► Duplicate period. [98%] when they are finally freed from their cages.< ► Remove extra < at the end.