Good read but i still agree that killing off Haru was just for the worse/bittersweet ending sake, his whole arc is realizing Sachi is also important to him as much as his dad, not living aimlessly but to protect the ones he love. Both main characters have moved on (Mask decided to show his face and Sachi refuses to become a coward again), why bother dragging a whole drama mother to end their happiness.
anyway i am glad i read this, what a ride