That's really a matter of personal taste and the nature of the fanservice. Like the fanservice here is the kind you normally see aimed at straight guys and to be entirely blunt it's kind of nauseating and dehumanizing to me.
Pretty sure both (or as many as you want to exist) genders can enjoy that.
That train scene which is just dumb because no matter the culture, no one is naive enough to end in that situation twice furthermore that situation won't happen again the next day.
Well it is obvious something she is going to fight off later to show her character growth.