Woah, it’s nice to see someone this excited about my game, look like I’m in for a huge answer but I feel like it will help everyone see where I’m going with this game so here we go:
I have no idea how the game will develop. Will it be somewhat of an sandbox game? Will it be an other VN walking simulator? Maybe an management mechanics?
Starting off with a good question, the answer is actually a bit more complex than one of those answer. The game's mechanics will evolve as the game progress, right now it's focused on introducing simple mechanics to create some mini-games that directly interact with the sex scenes.
In chapter 1.5 you will be able to play as Yuuta if you wish (The person you created the group with). That will unlock some brothel management mechanics, I'm not going to go too deep into it but he will basically be the one redirecting some clients toward the girls of the group and you will earn credits based on how well you do if you play as him.
But you won't be forced to play as him if you prefer to play as the hero it will also be possible since Yuuta will still bring some credits in the group at the end of the day even when you don't play as him.
Explaining everything in detail would be long but, to keep it short, the game will be focused on adding simple gameplay elements and let the player decide if he wants to play them or not.
For what are the non story fights? 20 credits doesn't seem worthwhile if you have to heal for 10 after every fight. Are they only there to grind exp and have more scenes?
The reason why you earn so little after each fight will be explained later (I mean, what you earn right now doesn't line up with the school's economy after all.) but yeah the main purpose of those fights is the exp and the scenes. (Although you only get exp the first time you win since the game won't be about grinding the same fight over and over.)
Will we be able to recruit the girls for our club too? I mean even this girls have an own little story and the little sister is just such an great opportunities for side content, which will also include one of the main girls.
I've actually been thinking about that too but I'm still unsure. I'd like to but I feel like it would add a lot of work and thus slow down the progress of the game so the most I can say is that if I make it possible, It will take a bit of time before being possible.
Will we be able to make choices to influence the world and story?
Saddly I don't think there will be a lot of choices that have a big influence on the main story. Freedom and choices will be placed in the gameplay\scenes and how the player decides to play instead, sometimes making you choose between being dominated or being the one dominating, sometimes giving you more freedom on choosing what you want to do to a girl and that kind of things.
Too many mechanics introduced in such an short time. I fear I will forget some of them or how they work.
As long as I do a good job on the game design you should be fine on this one. So far Each one of them is made distinct enough so that the player doesn't need to remember the name of the fight to know wich one he is playing (lust fights are choice-based, focus fights are played with a gauge, touch mode is played with mouse clicks.) The other two are a bit similar since they both use the battle fuck system but I've already planned to implement icons to make them easy to separate from each other. Plus outside of the non story fights, they all come up with a situation so it will feel natural to know what to do based on the situation given in the story.
On the other hand I also fear that some of them will never be used again and there appearance where just an one time thing.
Some of them will appear less than others that's for sure since every mechanic is created with the intent of trying to make each scene feel as erotic and engaging as possible and thus can sometimes end up being very specific. But don't worry they will come back, sometimes in a slightly different form, sometimes upgraded, sometimes exactly the same. (I already know when the ones already present in the game will reappear for example so don't worry.)
-Keeping track of people and quests
Yeah, there are a lot of people so I can understand this one but don't worry, just like in a shonen with a lot of character, as long as the story follows a nice flow it won't be confusing.
As for the quests, there is the quest log in the menu in case you ever get lost but maybe it can be improved?
-Not every NPC that is just there for the atmosphere should talk about sex. That becomes quite boring.
Yup, you are totally right! In all honnesty, I haven't given much thought to the NPC dialogue yet and plan on developing that a bit more once the game is more established to make it feel more lively
-You gave us an map we can freely roam. Make use of it! Give us stuff to find and experience. Don't let us walk for the sake of walking.
Don't worry about it, there will be things to do on the map in the future, secondary quest, things to buy etc will come in the future releases.
-Will the game focus only around the school or we'll see more of the city?
The game will be separated in two arcs, the first one will be focused on the school and we will see more of the city in the second one!
-Will we see the neighbor again or was she just there for the introduction?
We will see her again but not very soon to be honest.
...And that's about it I think? Phew, took me more time than I expected to answer but here we are, I hope you got the answer you wanted! Thank you for showing such great interest to the game, feel free to ask me more question if you ever have some!