The only thing being cucked in this game is my free time.
The Bad:
Prepare for an RPGMaker game with pacing so glacial that by the time you've gotten to the 'NTR' part, you've probably forgotten that you're playing an NTR game and your boner burned out hours ago. Everything in this game is slow: picking up items, entering areas, and having basic conversations. If you're anything like me, you'll give it a chance for an hour or two, but then you'll start skipping. You'll be skipping, skipping, skipping, likely horrified at the colossal amounts of text dumped on you for so little return.
This game endlessly baits you with tension and buildup that has absolutely no payoff, and the entire game is like that: no payoff, no catharsis. Hours of text and dialogue, only for there to not be a single scene currently in this game that's worth a fap, and isn't that just the greatest single failure of a porn game? To not even be worth a cursoary fap?
This game also has free-roam elements. Early on, the game even says, "If you continue now, you'll skip the free roam events," encouraging the player to explore a lot before progressing to the next day or quest. It has a fairly large town map that takes a long time to explore, and there might be... one event... on average every 30 minutes. I spent so long just wandering around a very tedious and empty map. It was a complete and utter waste of time, 90% of the time. This game really should have just been a linear visual novel; it's not utilizing the unique aspects of a 2D top-down roaming game in any way. However, even if this game were a visual novel, it'd still have slow pacing.
It also makes the criminal mistake of not having any sluttier side characters to pepper in additional sexual moments while the two main girls are a slow burn.Well, the game does technically have two slutty side characters, Juvia and Akane, but all they do is the exact same blowjob animation approximately ten times throughout the current patch. That's another thing this game has a big issue with; it's so repetitive with so little advancement in the story or plot. This doesn't feel like a game that's taking its time and building things up; it's just running around in circles. There's one decent scene with a character called Faye early on, but it's so detached from you and the main story that it didn't really do anything for me.
This is also supposed to be a corruption NTR game, but man, am I just not vibing with these characters? Yui and Marin, being the two main girls, seem to be fairly devoid of actual depth and personality. The focus is never on developing the bond between the protagonist and the girls but always on doing random mundane actions around the world or some sinister plot that I don't particularly care about. 80% of the dialogue feels like filler; you can never get immersed or feel like you know these girls as people, and the male perverts in this game are so comical that it's hard to take them seriously as they spew fountains of cum.
The Good:
Now I will give some credit where it's due. I think the sound design for the sex scenes was good, and the overall look and artistic detail of the world are some of the best I've seen in an RPGMaker game. The CG art can be hit or miss, with later additions definitely being of higher quality than the first pictures. It definitely doesn't feel like there's enough of it, though. Some events have just used animated RPGMaker sprites, and I'm never going to be able to fap to that.
The Future:
It's too late to turn this game into a visual novel, but it isn't too late to cut tons of empty free-roaming sections that have no content in them. It isn't too late to reduce or rework the worst and most boring parts of this game. Even simple things like there's one segment where there's a cutscene in the lake, then the cutscene ends and you have to manually get out of the lake before the cutscene continues... why not just... connect those two scenes together?
I'd definitely sprinkle in 4–5 new strong sexual events throughout the current story that are similar to the first Faye sex scene but more involved. This game needs a big event every 20–30 minutes at least, and it's easy to add them in such a way that they can be accessed with both new and old saves, with some creative usage of variables.
In regards to improving character writing, I want you to tell me something about Yui and Marin. What are their motives? What do they desire in life? What do they do in their spare time? Do they have hobbies? Interests? Sure, their profiles say they like reading and gardening, but they never talk about it or do these things. The game spends such a long time with these characters but says so little about them, how they think, and what they feel. Personally, for an NTR game, that's just not going to work. How am I supposed to be 'NTR' when the main characters are my sister, whom I don't know well, and some girl across the street that I'm kind of friends with but not that close with? Having a silent protagonist is 'hard mode' in regards to this because you have absolutely nothing for the girls to play off, but it's not impossible.
Summary:
I highly recommend you don't play this right now if you value your free time. But if the developer has a keen ear for criticism and can improve this game, I don't see why this review couldn't go from 2/5 to 4/5 and become a recommendation one day.