The fandom is lovely, and like all visual novels with point systems, finding a guide or walkthrough is easy enough. This isn't either of those. I've spent some time doing my best to arrange a sheet (Each with ten individual sheets!) in which you can input your decisions and have your points tallied up for you. I made five copies, since sheets doesn't allow for separate editions of a single document (For a total of 50 tally sheets!), so if you don't find an unused copy in one document, try a different one!
You're given the listed options, and then in the decision column you put what you chose. The sheet then automatically gives you the result of who gains (or loses) affection in the cats' respective column. On the farthest side these are totaled up and the flags you've triggered are also noted.

I have not yet implemented an ending system since I've got to test some things out, but that may come later!

In the case of flags, a 1 represents True (You got it!), and a 0 represent False (You didn't get it).
(In the case of a flag set where it's all or nothing, the display won't change unless you trigger all the flags.)

When you're using a sheet, I've provided a 'sign in' box, so that people browsing through for open sheets can know when one is taken. It doesn't matter what you sign in with, be it Steam name or something else. I've formatted the sheet so you can only edit the "Decision" column, excluding the heading row and the sign in area. Hopefully I've done this right (I'm more familiar with Microsoft Excel and not Google sheets) so even if people try and mess with it they can't. However, if they do, I have a base copy I haven't shared with anyone in the event I need to tidy up a sheet or two.
When you're done, be a dear and clean up whatever it is that you put onto the sheet. It'll take just a just a second:
-Click the first decision
-While holding SHIFT, click the last decision
-While holding CTRL, click the sign in area
-Hit delete or backspace
You're done! Now when the next person comes through, they'll see a clean sheet and know they can use it.

As with many guides and walkthrough, GT is Guardian Tiger, CL is Clouded Leopard/Likulau, and LC is Leopard Cat/Shu-Chi Senpai.

Since I listed each set of choices and wanted to make it as concise as possible, there are MINOR spoilers, but only as to what the result of each choice is and what branches open up due to which choices. If there is a blank space, it's because a specific choices needs to be selected to access the next choice, If you miss it, don't worry, putting something in the decision column won't affect much.

https://docs.google.com/spreadsheets/d/1zb98MywdCavEgpgdX08FGfIe-myXX5R4jua44Det9ZY/edit?usp=sharing
https://docs.google.com/spreadsheets/d/1qgqDYPYB1hpvHc7SfI30y1NfOUiYEXBpTy8bYdiX0vE/edit?usp=sharing
https://docs.google.com/spreadsheets/d/19UPPjNiTa8p4nKallvdUjE9hXQ8Yabdkgwa3YDBqKjg/edit?usp=sharing
https://docs.google.com/spreadsheets/d/1eEcTB1kJDvIavt-9sI0YGMqEzEIx1AfYahci8UnoukY/edit?usp=sharing
https://docs.google.com/spreadsheets/d/1hHVsIOvTC8Si2MPUPIVk-ju6o1R9pJUvZH1IROAztJ8/edit?usp=sharing