For me, from only hearing the chorus it feel totaly blown away. The melody took so many diffrent ways that I didnt expect. And I love love loooove songs where the tone raises, "boku no da ga ira" and "itsu matte mo".(sorry if I got the japanese wrong but you get which parts I meant. Thats truly amasing and gets right into my heart everytime!!
I still really dont know why (cuz I have been listening to both songs over and over again and cant really fint the similarity), but still
after that she sings kimi ga iru there comes a part that makes me think of Only Human - K. Lol, Im confuced why. Wellwell.
But for now, I think Im gonna spare myself until I hear the whole song but OMG its so freaking amasing so far, how am I gonna control myself waiting for so long? Haha. XD True "i-landsproblem" like we say in Sweden.