We're going to have to divide this review into two parts.
1. The Game Proper:
Herbal Healing is a cute story of how you, an injured man, gets pampered by a petite and sweet pink-haired girl called Millie (ミリィ).
From a relationship of childhood friends, it gradually escalates into one of sweet lovey-dovey romance.
In practice, it is half a clicker-- or rather, wait-to-click idler, where you wait for leaves to show up and click on them to get more herbs, then you either reinvest to get better returns from leaf clicking. This becomes currency you can use at the store, along with another.
The other currency is hearts, or I suppose we can call it "affection." This is initially gained by asking the girl to pamper you, but later on you get the ability to touch her in areas to gain a certain percentage of your affection multiplier as returns, or through sexual acts.
Getting pampered gives you up to 5 ticks of the stated amount of hearts, multiplied by your multiplier per scene. Sexual acts just give you a bonus based on how many times you made her cum. Service acts are in-between; low-cost (you need to build up the horny gauge to get her to do anything) but will only give you the stated amount x multiplier for affection.
Lategame will just have you spamming these scenes.
While the art is serviceable and the girl is cute, the scenes are probably pre-recorded; you also can't really move the camera around. Hope you can fap to it. The voice actress is pretty comfy though, and for its stated purpose, it can do a bit of emotional healing if you let her pamper you.
2. The Translator's effort.
I'd give this game 3 stars really, but thanks to the Translator's effort, I think this can be considered a prime specimen of top-tier bepinex/xunity translator finagling.
All lines are translated, and they are sorted in proper notepad files. Each individual image is translated where applicable, and Bepinex injects the thing as it goes.
If you want to study how to use autotranslator to translate a Unity game, this would be a very good game to reverse engineer.