1-Haha just like the book this game concept is inspired by, it starts boring then gets super interesting.
2-There is only so little I can do regarding the UI right now. I'm no UI designer, my specialty is storytelling and character design ( in fact right now I'm focusing on making a white hair character that actually looks good because white hair characters are my favorite but I can't seem to design them well enough. )
3- Yeah the running scene is my personal favorite. I repeated it so many times just because of how expressive it is. you can see in the MC's expression how hard he struggles to go against his cynical passive nature. He is not just running against the wind but against himself too.
4- I think Carmine mentioned the haram thing in ''Happiness 2'' when you start her route.
5- Lisa's identity is explored in ''Zero One'' (the closest new game to be released) and the snake thing is addressed in like the first minute of the game. Not sure if I should say if she is a Null or not but she will have a major impact on the series.
6- Once I did consider doing a DLC to ''Null'' or something but the game is complete. Anything I add to it will feel cheap. The effect of what happened in that game will show in future games (Even ''Zero One'' show a little effect of that game)
I can do a remake to ''Null'' with newer characters and longer loops but I will just be like rockstar releasing GTA5 on every platform or even worse Bethesda and their re-release of Skyrim on every platform and fridge . I really do miss the exciting times when I was working on ''Null'' and being so excited to see others play it. Even working on it, I knew it will be well received but living in the past is kinda sad so I prefer to spend my little free time every day working on newer games. I think maybe with enough passion and creativity I can make a game to surpass ''Null'' ( Metal gear solid reference)