I agree with what was said before. The teens are suddenly being drawn way out of proportion. They may be Japanese, but Yuuya would have to be around 8 feet tall! I do not remember this big of a difference in some of the earlier chapters.
OK, I just went back to chapters 5 & 6. The girls were around the height of his armpits to the top of his shoulder, depending on the girl. So, whoever drew them for this chapter drastically changed their height.