How do you use new game plus
*SPOILERS for anyone who didn't reach the ending cutscene*
Load a previous save ( a save before you reach the ending) then skip forward until you get the ending ( with the ending video and everything) then immediately after the game send you to ''main menu'' , click on ''new game'' and skip forward until you reach the partner choice of challenge 3. When you reach it then click on Lamda and you will be able to access her route