ほどいて、むすんで

Nohara-san was seated next to me when we changed seats in class. Her hair is very beautiful, but she is clumsy and can't seem to tie it herself...? Haruki, who helps to do his sister's hair every morning, suddenly found himself helping Nohara with her hair. As he tied her precious hair, they gradually became more and more aware of each other and grew closer. Untying and tying, their hearts are woven together like strands of hair. (Source: MangaCross, translated)