Hmmmm, having spent many hours playing this Game/VN, I have to admit that it has many, if not all, of the elements I enjoy in this type of game.
First, I will start out by saying that I was worried because of both the slow start, and the near immediate interaction between the MC and the older sister. at first, I was worried it would be a grind fest, then near the beginning, (and while i do enjoy these) I was afraid it would be a simple fap fest.
Instead, I discovered a game truly worth playing. The "grind" was crucial to the game, and teh "fap fest" was not nearly as intensive as I thoght. Instead I discovered a well written story, with damn good storylines and tangents that fit so well within the game. I fell in love with both Lucy and Alice. their story lines were perfectly integrated and really explained their particular concerns, making me want to protect and shelter them.
Lucy, with her experiences with school bullying, really brought out the "big Brother" in me and made me wanting to do more to protect her. Alice, with her experience with her father reminded me of RL experiences with my family, and made me glad the MC was so careful with her.
Every detail is revealed at just the right time, every difficulty, foible, or trauma, shown at exactly the right time in order to give the MC just enough information so he responds appropriately. Even the "dragged out" events with Alice, Lucy, and the others is justified and appropriate.
There really are few games I am willing to support with money or time (or even assistance in other respects) but this game has now hit the very top of me list. I have been considering what game to give a one time donation to, and this game. along with 4 others, is hitting the top of me list.
If the developer continues in the manner he started, I could easily consider him/her a developer of exceptional caliper, and would fully support him/her as well as promoting others to do so.
From me, HIGHEST praises to Killer7, a truly exceptional game