It's fairly surprising that a harem series would introduce all- or at least several- of the contenders in the first chapter, instead of giving each one an arc/episode. It's an interesting change of pace, but the introductions feel a bit rushed.
That is kinda normal. The next several chapters will likely be dedicated to properly introducing each of them, but getting them out right on the first chapter is a common tactic for harem shows also, specially if the "main girl" isn't supposed to be obvious.
Ikr, isn't this the norm for harem manga?
Anw, this chapter was great. Gotta say, the scene where MC was taking off her jacket was chef's kiss. Screw other girls, MC is the best girl XD