I'm quite happy with how you executed the MC!
Their personality is bland (which is a good thing in this case) enough so us players can imagine them just the way we like.
Since i'm a visual novel nerd, i went through all the different dialouges from the choices you provided and i'd like to say that the way you wrote each of them is commendable! For example : there was a 3-option decision laid out for the players in one of the unit's tavern meeting where we could choose wether we have a wealthy upbringing, a poor one or something in between. It made me feel included!
As someone who had taken a liking to 'blank/insert' protagonists, i'd like to thank you for it.
You did a splendid job at displaying the different ways the MC could be molded into according to us players' personality choice.

Of course, there's always room for improvement, so keep up the good work <3

Best Regards, Star

(P.S. My 'OC' is literally just me but in the ADW Universe XD, Self-Insert go brrrrrrr) 

Helloooo! first of all as ı person who both loves isekai stories and blank protagonists (because in those stories ı can hopefully crave my own path) ı am happy to see this post! ^^ yay !

as for my MC ı usually think of some sort of ''alter ego'' of mine in stories ı cant call them myself since with all those experiences they will gain as the story continues they will surely end up different than who ı am because the circumstances we grow with is certainly different .

As for the choices ı love them! because most of the choices are usually general options of words or actions that you can easily insert your own touch in them unfortunately ı saw many games having ''blank'' protagonists, yet you could feel their personality through the options. (well ı cant say ı played every game with blank protagonist but ı played the ones ı could)

ıf ı could give few examples there one game ı played had look like having a blank protagonist yet while ı was playing there was so little character actually said like the options ı could choose were usually like ''Hi, uh, that..., ha ha'' . Unless there were times where main character would speak only with some certain way would affect to story in ''right flow'' like lets say our blank protagonist had found themself in critical or bad situation with other characters then this very quiet character would immediately become talkative enough to gather other characters around them to survive from this situation. and well, ı would feel like ı wouldnt say the things they chose to so ı usually see these types of games are having a typical character yet games leave their appearance to our imagination. 
Other game had alot more ''options'' to pick but unfortunately they were all extreme type of choices. İn the main story somehow all the LI's would be interested in you automatically and you could either accept them fully or decline them horribly and well there is no other choice...  there was also type of choices you could make and tell those LI some sentence that calls them ''dog'' :').  ı guess ıt needless to say made no sense for me since ım type of person who dislikes both being pushed into things and conflicts or anything harmful and this game was about either ı would accept the feelings LIs' pushing to me or ı would be cruel against them. maybe there are certain people who wouldnt mind to be cruel and bad towards characters since they are technically ''not real'' but usually put myself in the game world thorough my alter ego so ı generally accept the game as my second reality which makes me not want to do such things at all. Of course, ı played other visual novels with not bad blank protagonists but most of them are usually having very quiet protagonist so player doesnt have much option to pick.

For ADW ı think there is alot of room for the player to think about how they can approach situations as both options and answers doesnt really show any direction of what protagonist could have said or did except the main idea you will pick from the options (ı mean whatever ı chose in that moment ı can imagine my MC saying or doing in their own way and answers ı get from other characters doesn't really clash with this). I was also very happy about how Samuel said ıf there is certain things we cannot eat due to certain health or religious reasons we should tell him. Actually this part is something ı dont really see games think or at least ı have never encountered such thing before though ı usually think these stories in fantasy universes with not much religious content because fantasy and religion may have some difficulties getting along especially thinking everyone who play this game has their own beliefs and trying to put religious lifestyle into fantasy world can be... interesting.  If ı should give an certain example in some beliefs, there some certain ways to dress (either in daily life or in certain events) and talk with others or certain praying duties people should follow also there is tons of other thoughts when ıt comes to romance XD but ı wont bore you with them. so instead of fully adding religious beliefs into game ı tend to think fantasy games in fantasy universe since pushing full reality into game does not make much sense in the firts place. But ı think ADW is pretty open for people who wants to create their own religious OC for the game as ı think characters wouldn't mind to even help the MC's continuing their religious life while their stay in this fantasy world. This is why ı didnt mind my MC  doing religious things ı normally do or think similar with me in religious topics.

As for my MC ^^ well since they are my alter ago ıts safe to say that their personality is pretty close to mine except they are bit more confident than ı am since ı also wish to change my bad trait of not being able say ''no'' to others. well ı would even call her me but yea as ı said in the end of the adventure she will grow into someone different than me surely and well for also because of some certain religious topics ^^; so ı prefer to call her  alter ego or other me in the fantasy universe XD maybe some people might call my MC bit gloomy since ım kind of person who can get stressed over everything and can be pessimistic but overall ı think my MC is someone who trying their best to hide their gloomy side and be kind and friendly towards people while trying to avoid conflicts. and so far ı was able to see good options that would reflect this.

sometimes ı try to imagine them having their adventures in the ADW world but also ı feel like ıf ı hadn't any quick save and quick load ability ı feel like ı would be kind of devastated in every defeat ^^;; well ı think once ı finish my main save for now perhaps ı can challenge myself to ''no quick save/load'' account to see how would my alter ego proceed with no power over the process.


ı also do remember Lor was calling MC being very calm even in fight but ı guess ıts either due to gods help or MC is focusing on dices instead of fight itself XD
ı actually think about this this MC being calm alot but maybe ıts just a small detail. well ıf ı would explain it in my own with my MC then she would be probably overly focused on dices and would probably going inside inside of her mind without reflecting these feelings to her face clearly XD

I always assumed I wasn't one for self insert type games and as a writer if given the chance I always feel having another strongly established likeable character would be the preferred option. I kinda wrote it off not giving it a fair shot (I've played some otome games with varying degrees of self-insert protags but ehhh.)

but um. well.  I don't know what happened here to be honest. This is my first time making a proper self-insert OC and it's been so fun LOL ADW does self insert really well and I'm now more open to the format.

Maybe because Jeth feels like a character I'd want to write myself or the fact this is a project from a fellow indie creator it felt a little more approachable and collaborative vs bigger otome games where I feel like I'm being pandered to (and so I end up not really connecting with it) but as soon as I was done with my first playthrough I was working on a character to ship jeth with haha:

(SPOILERS FOR VILLIANS HEART PLS GO PLAY IF YOU HAVENT. ALSO CHAPTER 7 OF ADW I GUESS? PLS PLAY THAT TOO )

I love (and made sure to get) specifically Jeth's return ending and so my TO was primarily designed for that.... Queen outfit in Jeth colors heheh:

I don't have a proper name for her.......She's just EkkoberryTOchan to me LOL TOchan for short. Her personality is a lot like her creators-- very jeth-focused (to the detriment of everyone else), pretty shameless about it too LOL 

I started with Villian's Heart so in my brain that's the first game and they're all interconnected to me u______u 

Jeth return ending ---> portal didn't take them to TO's world but ADW Timeline instead where Jeth's memory got (partially) erased but TOchan remembers p much everything and is trying to date Jeth again----> Gacha Date 

ADW Timeline:

They're trying their best not to worry

How the kidnapping played out in my head

Landing on Jeth's shoulder KEEPS ME UP AT NIGHT

And finally Gacha Date lol:

I'M STILL HURT BY THIS LINE LIKE JETH IF ONLY YOU KNEW. I LOVINGLY DESIGNED THOSE OUTFITS FOR YOU

Its very immersion breaking not to have "Throw self at Jeth" option every time hes on screen but I think that's my only critique. I genuinely love the world and the (other) characters (as well) this series has such a special place in my heart FOR LOTS OF REASONS but one was learning to have more fun with self inserts too.