At Lars route before the end of the day 8...
It was the best ending that I could arrive...
Spoiler for those who didn't played the day 8 yet...
Walter receive a phone call at the dinner, and it's a creepy phone call ("I'm watching you" or something like this) and it's the outcome in how you can say to Lars sleep in Walter's bed and there's a lewd moment in it (just text lol). Was the best variation that I could arrive (most like and love counter)