After a certain point I think it'd make more sense to make a single series called "icereizou one-pagers" and have all these as the chapters. Instead of the needless bloat of all these "series". This goes for any of these other Twitter/pixiv artists that do a large amount of short form comics.
He was probably a good boy, not wanting to take advantage of her, so he didn't do anything and send her to home safely.
Just to discover that was just a act and wasted a opportunity, in other hand that probably will make she like him ever more.