For the male protag tags as I mentioned to another person here, that is well and good however that information should be hinted to informed to the player *in the game*. i.e. not having the player rely on 3rd party information. It does not need to be explicit (like 'MC's name (male)) even a better half image of the MC as laying in the bed to indicate if the person has breasts or not, or even a flash-back image when telling the story of the loss of the family (i.e. family photo with parents etc crossed out or something). It's mainly just to give the player enough information as to how to name the MC. Androgenous names such as Jan, Tracy, Stevie, Morgan, Charlie, etc. don't provide a guidepost without other context. It's not a huge issue just an observation. In other games where gender (transformation, etc) is fluid or roles are fluid (gay, sissification, etc) if gives the player some context.
As for including aff/sub stats in the phone or other locations would be fine, just commenting on the lack of feedback to the player.
As for shortness, was more as in the amount of content. Story progression with only one chapter is not really enough data to provide feedback. Seems 'ok' but without knowing your progression plans or if you plan 5 chapters or 50 can't say. Though as to initial pacing the introduction of many characters in a single chapter seemed a little excessive (rushed) unless there is a reason for that I am not aware of.
Anyway, will be interested to see how you progress.