Moka and Tsukune each have a crush on each other and Outer Moka's first friend love interest. She loves drinking his blood. Moka grew to care deeply for Tsukune since their first meeting, doing whatever she can for him. Outer Moka is the very first student Tsukune met upon arrival at Yōkai Academy. Having fallen in love with her at first sight, Tsukune's thoughts are almost constantly about Outer Moka. Initially he is quite annoyed by Outer's constant habit of biting his neck for blood, he soon realizes that it is a necessity and willingly allows her to do so to keep her healthy.