If the Dev read this, i can't help but point out a flaw in your script, i can be wrong but i trust there is rules for Isekai worlds/univers.
As far i understand you have 3 types of Isekai:
- MC is summoned with a Spell/Artefact by the homelanders of the isekai world (MC is alive with his original body & pulled out of is world/univers without his consent by other living being).
- MC die in his world (by accident or not) & his welcomed by a deity who offer him/her a new life, the mc here is just a wandering soul bodieless, in this case the mc will be Reborn & start from scratch (ie literaly the mc come out of a mother womb & start his/her new life as a baby)(yes that would mean the mc is aware of his inability to use magic, his new fa mily too & would have to hide it until he get trapped by the princess spell) or his soul is send to a fresh dead/comatose body.
-MC die & is welcomed by a deity or is traped by a device & send to a "game" world (only in this case the mc get a fully grow-up new body) in this case the mc will have acces to a "RPG HUD" with spells/abilities menu & player stats.
So either it's a plot mistake or we get a missing part at the start of the game, because afaik your story is from the 2nd rule.
So far i trust your game is not the common "desperate housewives" with a MILF getting fucked by the poolboy/repairman with no back story, plot & story, so little thing like that matter when you want your game/movie/anime to get life & a good story.
[sarcasm ON] Yes i'm aware of the big headache that must be to make a coherent plot where the mc comes into the world as a baby, then you have use the horrific "temporal ellipse" to age the mc in order to start the story because "all characters are aged of 18 or more", but... but wait ! then your mc can't be clueless of his new world because he/she would have grow-up in this same world for 18 years... & be aware of his missing mana & inability to use magic & have new parents... maybe a sibling or two... (not mandatory futur LI).
But if i use the 3rd isekai rule then i have to build & implement a HUD for the mc...