In episode 5 of the anime, Yato implied that Nora could use Boundary, although her Boundary was not as strong as Yukine's. She can only use this skill in her human form.

Does Yukine become a Nora?

After becoming a Hafuri Vessel (Blessed Regalia), his new Shinki form is that of two twin katanas, shorter than the original, but with the same design. Later on, he becomes a Nora after having Father make him his own Shinki, obtaining his second name, Hagusa.

Who has a crush on Yato?

Hiyori Iki is the love interest of Yato in the manga and anime series Noragami.