1. Extract and run karigurashi.exe.
(The exe is fine and the official from Steam, its not a crack)

■ Game Information
Welcome back to your childhood town! The FHD Remaster of “Karigurashi Ren’ai: Living on Borrowed Love” is now officially available! This new 1920×1080 Full HD version enhances the signature cheerful and heartwarming style of ASa Project, bringing a fresh look to this interactive comedy visual novel. Immerse yourself in a comedic story where your choices will shape the protagonist’s relationships with four unique heroines and determine the path his heart will follow.■ Story Synopsis
The protagonist, Takuma Setoda, returns to the town where he grew up.
He’s come back to break away from his dependence on his parents and start living on his own.
The town is filled with memories from his childhood.
Takuma had always longed to return one day.
Finally, he successfully convinced his parents, fulfilling his dream of returning to his hometown (and living alone)!
However, when he arrives at the rundown old house where he used to live, ready to start his new life, he discovers that the home from his memories has become so decrepit that it’s completely uninhabitable—a total ruin!
He needs to find a temporary place to stay to continue his studies… but there’s one problem: he’s flat broke.
With nowhere to turn, Takuma is at a dead end.
Just then, a helping hand is extended by none other than his old childhood friends!!
It can’t be a long-term solution, but it seems their families are willing to let him stay with each of them for a short while, rotating between their homes.
Although one of his friends makes her disgust clear and strongly objects, Takuma somehow manages to persuade her. And so begins a strange, bizarre, and unconventional “boarding life.”