No prob, thanks for checking it out anyway.
Just out of curiousity, what games would you consider to be a sandbox? Something like Free Cities? Sengoku Rance? Monster Girl Quest: Paradox? Are JRPGs sandboxes? I guess they are kinda linear...
The structure here is most similar to Summertime Saga I would say, due to its hub, which I would consider to be a sandbox (which is why I added the tag to this game). Although with the length of the scenes, the nature of the weekly timeframe of runs, and common route scenes in the morning, Ninisanni Scenario 2 is definitely a VN.
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I haven't played any of the examples you mentioned, though I think some are on my to-do list, but there are two qualifiers I think of as to whether or not a game is a sandbox: 1) It's completely open-ended; there's no end credits and if there are you can keep playing afterward because there's so much to do; and 2) the focus is on player-generated content, so there are effectively infinite possibilities for what you can do.
With that in mind, I would consider the following to be sandbox games:
Breeders of the Nephelym
Honey Select (though it doesn't have a physical open world the main qualifiers are there)
Lust Doll
Also consider from outside the pornosphere: Dwarf Fortress, Kenshi, Minecraft, Rimworld, Terraria, and for a rare example of prose-form sort-of-sandbox, Fabled Lands.
The typical JRPG is definitely NOT a sandbox, and incidentally I've heard it argued that they're not even Role Playing Games.
Like all genres it is nebulous, so there is room for interpretation about whether for example a game having an open world or character creation alone (like Fabled Lands, TES, Fallout) makes it a sandbox. The problem on this site is that somebody has taken the "open world = sandbox" interpretation and gone even farther so now it seems any game with
any degree of non-linearity gets the sandbox tag. I for one keep expressing discontent about this, but I don't even know who to bring the issue to considering the uploaders are just complicit about it. It's not even the only tag with this sort of problem, but the difference with Adventure for example is that I'm not even entirely sure what an Adventure Game is.
