A well-crafted wholesome romance of the "Lovable oaf teaches hardass the value of Christmas" type. Not much taboo breaking or fetishes from the protagonists perspective, which is my personal preference, though that is likely to change in the future. From the story that is in this first release Tatsumaki has a complete character arc, which makes the story surprisingly compelling for a porn game. I believe the story has a need for the protagonist to grow for the relationship to be less sexual and more romantic, but this is a first release, so it will probably get added. When it does, I hope it is more than just learning to to be a stronger hero, and more overcoming some emotional hangup, like Tatsumaki.
The combat is responsive and quick, which is very important for a turn based rpg. So far the combat is pretty good, though scaling can get weird since there is no incentive to take the harder fights early, and it is better to just max out easy patrols.
Scenes are hot, which is obvious if you know the authors previous works, and the lack of mandatory fetishes should have broad appeal for most people.
TLDR: Good story, hot scenes, responsive gameplay, 5/5