That Wolf-Boy is Mine! Vol. 2 GN
Komugi, the new girl at school, has sworn to protect the secret of Yu's lupine identity. But in the midst of their growing friendship, she blurts out a startling confession - one that could upset her relationship with Yu, his crew, and even the delicate balance between humans and spirits. Meanwhile, Yu's sharp, sly friend Rin take matters into his own hands and tries to speak some sense into Komugi. It's not long before he realizes that th strange human girl just might be growing on him, too!