Follow starfighters advice. EX only adds the H scenes in the original 6 character arcs which you have to do those 6 characters to get to Rins true ending that goes into Refrain. After you beat Refrain you unlock 3 EX characters to do: Sasami, Kanata, ans Saya. Currently I think Sasami's arc has been translated but there is no patch yet. Just read the original for now trust me as nice as they are, LB dosent need H scenes. I finished LB a couple months ago...Best VN I've ever read.