Installation path: C:/Users/USERNAME/AppData/LocalLow/Team Cherry

Just drop these files there and that's it. The save is assigned to the first cell in the game list. If you do not want to lose the save in this cell, then simply rename this file ( user1.dat -> userAvailableCellNumber.dat. user1_1.5.78.11833.dat -> userAvailableCellNumber_1.5.78.11833.dat). The maximum number of cells in the game is 4, but you can increase it by installing the appropriate mod for the game.