This is basically a room escape game where you need to figure out how to get the items needed to progress. There are no battles and therefore no grinding, you just need to figure out how to progress through the sequence of events. It's a fairly short romp that should take you about 30 minutes to complete, and considering the quality of the H scenes and amount of time needed to invest I'd say it's worth every second.
Figuring out the puzzles is entertaining enough, and even with the MTL it's solid enough that you can get through without any issues. The one exception is when you need to enter JP characters for a password and the code ended up translated with English characters, though thankfully a certain lord Nerumin gave us the right code (ゴブスミス). Otherwise the robot speak isn't obtrusive to the overall experience and most of the dialogue can be skipped anyway.
To make progress, you're going to need a variety of items either for interacting with the environment or giving to other NPCs for rewards. You get items in several different ways: gathering, purchasing, NPCs, and most importantly synthesis. The typical game progression is that you need X item to proceed, so you gather the necessary components through a combination of the above methods to progress toward the goal.
There is also some light element of time management. You have 20 in-game days to beat the game, and each day you're given 2 fire spells to either light torches or blow away obstacles. Your spells are recharged at the end of each day, and triggering an H scene ends the day automatically. There aren't many obstacles to begin with and even with suboptimal spell usage you'll quickly gain access to all areas where you'd need spells so it's really not a hindrance. The game is more or less timed so that you have just enough time to escape after viewing every H scene once, so don't stress over anything and take your time.
Like I said, the minor time investment is worth it in relation to the quality and quantity of H scenes. If you're too lazy to bother with some light puzzle solving, then you'll at least be satisfied with a full save with gallery unlocked. Otherwise, I had enough fun playing through the game and wholly recommend it.
