Pretty nice game for what it is.
In terms of grind I am not sure what people expect, it's an excuse to do all kinds of sex scenes and then unlock even more scenes.
You unlock all kinds of skills by doing certain type of content, while your overall progress is tied to your sexual experience level.
The most important skill is the hikikomori skill which let you skip time at the TV which you can get from the dancing crab at midnight, it spawns some time after the beginning of the game and once he appears he is pretty consistent in it's spawn rate.
You need that skill to skip time to a year(365 days) to reach the ending, especially if you want to do a virgin run.
It's also useful if you want to control your fertility phases.
In terms of grind I am not sure what people expect, it's an excuse to do all kinds of sex scenes and then unlock even more scenes.
You unlock all kinds of skills by doing certain type of content, while your overall progress is tied to your sexual experience level.
The most important skill is the hikikomori skill which let you skip time at the TV which you can get from the dancing crab at midnight, it spawns some time after the beginning of the game and once he appears he is pretty consistent in it's spawn rate.
You need that skill to skip time to a year(365 days) to reach the ending, especially if you want to do a virgin run.
It's also useful if you want to control your fertility phases.