Ok, if i want to try for first time this game what should i download? like what are those drm and care package? Some motns ago remeber reading (maybe i am wrong cause of my shitty memory)about a controversy of this game, where the author wanted to remove all the h content so in the past i skipped the game... the 8 gb is full contains all or is there a patch?
There care packages are equivalent to DVD bonus features. Info sheets on characters, a bonus non-canon animation (usually an aged-up or aged-down version of one of the girls). If you never look at them, you miss nothing, and if you never download them, you will not trigger the DRM.
Dev never wanted to remove H content. He has stated that there's no point in making a VN that doesn't have it. But around the end of 2021, Patreon freaked out about the game and made him make a sanitized version of it (that could be restored via patch), so there were briefly two versions of the game, but after about 2 months of this they took his page down anyway and he stopped supporting the sanitized version.
8 GB sounds about right for the full-size download. Because of the way he does the file structure (an artifact of the two-versions), some folders tend to get left out during compression that break the game if not included, so it's strongly advised to do the full-size download for the first install, and then use the update patches every time there's a release afterwards to keep it current. If you miss an update patch, re-download the latest full version, skipping an update patch will leave out the scenes added to the game in that update and break things.
