While I understand, that it would be nice, if there was more than a single (or in this case two) person developing such a project, I'm still very pleased, that those persons exist, who try to realize them because the biggest requirement for games to be developed by more than a single person is, that there is enough funding, and this is what hardly exists in the lewd game sector.
The alternative are little strokers with 1 - 2 LIs, which I'm absolutely not interested in. And unfortunately developing games with more people doesn’t automatically make development faster or better in a linear way. Once you have a team, coordination becomes a major factor. Progress often scales less efficiently and not every of your employees works as enthusiastically on this project as the person who imagined it.
I'm playing and supporting this game, because there is a developer with a big vision, who has proven, that he is able to realize something good and complex over 6 years and I'm confident, that he will be able to bring this to an end. Altos is in my eyes definitely one of those devs, who have a plan, or at least enough of a scaffolding to be able to build his game around it, even if it takes longer. And the scaffolding is there. This is not a game, where the protagonists starts to corrupt his family. Once he has done this he corrupts the town and finally the world, while with growing scale, the corruption gets shallower and shallower or where the main aims of the game are so far from each other, that one will never bring them together in the end. Here is a school with a group of main LIs, a group of side-girls and a group of nameless extras, and the main aim is to raise the grades by educating the main cast and have them finally all pass a single final exam.
This is a quite solid structure, which provides a strong framework where one can build around beautifully complex storylines without losing focus completely. And I think this is a great strength of the concept that Altos thought out six years ago to be achievable by a single person, even if it takes its time.