Responses
I think he was suprised at the shape of the rock being in such a place. He said "oh" while looking at nezumi, realizing the hard time he was having and feeling sorry for it.
ahh okay! thank you very much <3
hi! so i've watched the anime and i'm on chap. 19 page 22 at the moment.. and yknow nezumi and sion are climbing. at the page sion is thinking "is this a rock?" and then you see nezumi heavily panting and then sion is like "oh...". im confused.. idk if anyone else was but can someone help clarify? <3