I think it's more like, Subaru kept on keeping his nails short; but I expect he goes down on Akane, whereas she hasn't quite worked up the guts to do it yet.
I wonder if the author will bring this up...?
You guys do realize that Starchild dubbed this comic on YT? Sadly, his account was terminated, likely for copyright strikes, but I saved about 16 of them, and here's this one:
https://odysee.com/@somercet:a/Starchild_Steps_to_Acquire_Femboy_Waifu_comic_dub-ytSFb8f4w3k:8
1. I would bet he's saying the equivalent of, "I am eating," which would mean A, he's has sat down and hasprepper and is planning to eat, so he is "eating" in a more general sense, and B, he's eating Akane up with his eyes.
2. Dunno. "Shoo" is used most for children and houseflies, "shoo them...