Heya, sorry for the late reply.
For page 12 and 13, after giving it a second read, I think your suggestion makes sense. I initially thought that after Iori talked to Hyouka, he followed You (the character) to the canteen. Instead, it seems that You (the character) goes to the canteen first, and Iori heads directly to where they reconvene.
View attachment 42066
For page 24, though, “You” here is the name of the character, not Iori referring to himself. The typesetter for this scanlation is also quite upset about having “You” as a character name in an all-uppercase font.