This is a solid RPG game.
One of the best RPG maker games i've played, period.
It took a little to get comfortable with the day system. However, eventually you settle into the swing of doing your "dailies" which is collecting your daily rewards, gifts, torturing and doing your own gifts to raise affection.
You also accept the fact that the sheer amount of quests in the game means you won't be hurting for ways to end the day, so don't over think it.
The investments are extremely cool, one of my favourite mechanics in games like Fable for instance.
My current favourite party is Papachi, Healbot (Felix), Elaiya and Browyn.
Papachi in either form works. As a warlord, he can assist in keeping your party alive and can go Def / Atk buffs. I'm currently doing Phantom Knight to raise that character's affection, but I actually like this playstyle too. The ghost party is extremely defensive and turns him into more of a leading DPS role too.
Healbot is a great healer and utility, give him the rhinestone relic that recovers MP in combat and when walking and you'll have smooth sailing in all missions with infinite healing out of combat. In combat, he can potentially stun, increase MDF and MAG, but also give whole party Agility buffs, huge for our next two characters.
Elaiya is huge single target damage, late game she'll one-shot most enemies in the 1st round of combat. Her whole role is just huge single target DPS. Who needs AOE when you kill someone every round?
Round 2, that's where Browyn comes in. She is a great assist to Elaiya, as can apply a lot of debuffs. Now for a long time I used her to put bleed / acid / burning on high HP tanks. Now, I actually just use her to Pin targets. Pinned targets lose all dodge / crit dodge so Elaiya guaranteed hits all 3 shots, and most likely crits 1/2 times. It's one-shot territory maybe!
All this, which is to say, i'm not playing this for the H. It is a nice bonus. :)
Now if the H had the budget and resources to be fully custom art and consistent (and most importantly finished!) then this could be a god tier H game but eventually I found myself just opening this every day to quest...
Great game. Like. Actual 'game'.