Yup, sandbox games suck, but they suck less the better their sandbox navigation is. Games like this one, which require you to grind and constantly click through menus and search for content, are not one of those.
The game literally has minimal amount of grinding what are you talking about? It's not grindy at all. The only thing you have to grind a little is gold and you can solve it in 5 second with renpy save editor. Some of the best and extremely popular harem games are all sandbox. Harem Hotel, Corrupted Kingdoms, Myhtical Manor, What A Legend, Love of Magic, A House in the Rift, Treasure of Nadia, Sexnote, The Headmaster, Corruption, Taffy Tales, Champions of Realms, MIST ...etc. When it's done right, sandbox games are the best. Personally I like better than one and done vn games. Repeatable content and the world keeps the game alive for me while waiting for update. I occasionaly launch the game to fuck around while waiting for update. But when it's one and done games, I only play the game when there is new update. After that the game is dead. For example I can launch harem hotel to fuck around with my harem girls time to time wile I wait many months for new update on games like WVM. Just because you hate sandbox, not everybody needs to hate it. In fact they are extremely popular