If you set aside the ghost with big booba and look past the art... This is a Harry Potter fanfiction without any of the stock HP characters, made into a linear VN with unskippable match3 minigames. Ugh.
Credit where credit is due, unlike some other HP "parody" game that must not be named, this one doesn't torture your balls with a firehose of bad writing. It doesn't mean writing is necessarily good, but its volume is definitely contained. The premise is fairly straightforward, even if the justification for it is definitely in the realm of dumb porn logic. Your character needs to create a teaching institution from the grounds up, and there's apparently no better place for it in the entire Britain than a small podunk town with a rundown mansion inhabited by big booba amnesiac ghost. Granted, she presents two big reasons to stick around... but still the grand plot is not standing up to scrutiny.
Then again, who cares, it's a russian-made HP pornfic. You can expect cute art and some animations, and some contrived shenanigans. Extremely contrived to the point of cringiness. In a sense, this game sets (low) expectations from the start. It's a story set in HP universe, but without any of the canon characters present. To me, that's an utterly baffling decision because original characters are the entire point of a "parody" game or a fanfic. Not the trash tier lore.
The gameplay is also not stellar. This is one of those pesky VNs with bells and whistles attached. The worst part: you need to grind some resources for your quests, and you do that by playing two flavours of match3 mini-games. This part feels exactly like a steaming pile of trash mobile game, only without the gacha components. Small mercies, I suppose.
Overall, maybe not a waste of time, but not really good either. Average, as averages go.