(Disclaimer, This review is mostly about book 3 and may contain slight spoilers)
Its an Amazing game all together. It is free and available on the computer and mobile which is good because then you have options. You can support the developers on patereon which is also a good option.
Anyways like the devs said book 1 is pretty basic and pretty much teaches you the basics of what you have to do.
You can go through that book pretty fast.
It is recommended that you Watch the series before you play this game so that you understand why you are doing some of the things but also because you already know characters and sometimes the game has dialogue from the series itself.
If you are in it just for the nude Girls you can actually see any one of the trainers nude very fast by for example peeking in on them while they sleep or wash up although it is more enjoyable to earn their trust.
There are Three books right now but the love route in book 3 is not done but still requires you to play it for hours finnish all the gameplay it has as of right now.
Book 2 was probably the least enjoyable for me because it felt the most grindy, You had to do kind of a lot but in the end it wasn't that enjoyable.
You did have to grind in the 1st book too but it was much simpler.
Book 3 was by far the best in my opinion, it might be because of bias (Toph is my favorite character) but I feel that it also was because of the story.
(I have played only the love route which is not complete as of now)
Compared to the 1st 2 books you gradualy earn your trust and love, sure you can go for a cheap shot and peek on Toph when she goes to wash herself off but what's the fun in that?
You end up training with her and earning your trust until she grows to love you. At first you don't do anything sexual but she does get comftorable being naked in front of you but you can choose to tell her that you like her and she eventually confesses that she loves you etc.
After being with her for a while you basically have sexual interactions most of the time and teach her how to do it seeing how she is a virign.
She is also insecure etc and you have to talk with her a bit which is fine because it fits in the story etc.
What you have to do to unlock the next parts in book 3 is still not clear all the time. The basic stuff is usually to upgrade Buildings, go in to the tunnels and rescue Girls or go do stuff with the girls that end up living in the village you make (example being Suki)
I am not sure if the crab battles are required but I have done quite a few and they are by far the most annoying of the things to do, they are also in the end of book 2.
Some other less enjoyable parts is believe it or not but having to fuck everyone all the time, yes. How could that be a problem?
So your main goal for yourself is probably to fuck the trainer, you go with whoever you like the most be it Azula (You are in the body of Zuko in B2), Katara or Toph.
So lets say you want to just finnish the quest and do the training so you head to Tophs house and one of the other characters are there, they ask you to come with them and you do and then you fuck them or something. That's it. You wanted to come further in the stody by lets say, training on your earthbending so that you can go further in the tunnels and find appa or something (I Believe it has not been added in the love route yet as it is not complete) but then you can't because everyone wants to fuck you.
I'll be honest, my favorite is Toph so naturally I would like to just play the game, enjoy the story and beat my meat
And as I chose the love route and you literally become her boyfriend I would prefer not to date everyone else but you have to.
You have to date Jin or whatever she is called after rescuing her from the tunnels, you have to date Katara after she is feeling down but why? Can't we chose? I get it if it was the slave route where you could mind Control or whatever then you could fuck whoever you wanted but when you are in the lover route I would prefer if you had a choise.
I am a wierd person I know but that is how I feel.
Anyways just a random thought but Toph does have Dreams aboutgetting caught in a Cage or something and says that her dad is in Town or whatever so I Think that when book 3 is complete she will like in the series, get caught, invent metalbending and then when she comes back she will cry and you will Comfort her. So sweet.
Game is 10/10 but I would like to not have to be a manwhore.