Pro:  
Graphics and UI are on 5 stars level, comparable to bigger commercial  2D point-n-click games (Broken Sword, Monkey Island Remastered etc).

Neutral: 
Lots of story content (imho - you could see this as a pro/con ;) )

Con:
It takes more than a few hours to get to spicier content. YMMV if you prefer a story driven adventure approach. 
Waifu choice could have a bit wider differentiation...