If the supernatural elements were explored better, the story could have been more interesting. As such, we don't even really know the extent of the FL's abilities or the dynamics between espers, healers and guardians. Yes we know that espers have powers that takes a toll on their bodies so they need healers to heal them, but healers gets exhausted after they heal espers so healers in turn need guardians to protect them, but that's it. How the guardians protect the healers was vague, was it physical protection, or preventing them from using their power, or reviving them using a ring after a healing session? How the healers heal was also unclear, was it automatic or were certain conditions needed? The dad of SS (a healer and our FL) was the most hateful character in this series for me. He was too unreasonable and selfish as well. His treatment of SS in her childhood was child abuse. He basically took her freedom away and even made her feel guilty for fighting against it, calling her 'naughty'. All for his so called 'protection'. And even when she became an adult and he kind of promised to let her be free, he still continued to take away her freedom of choice like when he texted QX (an esper who can teleport and our ML) pretending to be SS then deleted it! I was thinking that QT (QX's sister) could have been saved if KL (a guardian and our SML) was with SS as they tried to revive QT, like they did near the pool area, but again dad interfered and told off QX, saying the price for healing QT was the life of SS. If this was true how come a lot of people was healed by XX (mom of SS)? And I felt like dad hid that encounter with QX from SS. This led to QX dilemma of choosing between his love and his sister and led to his and SS being apart for 2 years during which KL and SL (QX's best friend and QT's admirer) hid the fact that QT had already died by saying QT was only travelling. I felt really sad when QX cried when he received the postcards of QT seemingly on travel but was photoshopped by SL. Some may think that QX believes that his sister is living well through the doctored postcards but I think differently because he can teleport to a place even by only looking at a photograph and he did not even try. I felt like he knew at that point that his sister had already died and so he returned to SS because now he doesn't have to choose.