It's almost.. No EXACTLY like you didn't play any of the games at all. Or at most the main one, but only partly... The ONLY thing these games have in common, is the so far 2 characters. The MC and the barista. That's it! The rest is EXTREMELY "what if".
Note: only 2 characters. How TF could that be anywhere close to the same game but with sex content???
Here's a thought: If you don't know ANYTHING about something, don't comment about said something!
Just a (for most of us, extremely logical) thought!
No offense or anything, have a great day!