Tsume and Toboe are forms a strong bond to each others. At first Tsume proves to be annoyed from the presence of the younger wolf, and chase him away. Later, probably influenced by the death of Ghel, and the need to survive outside the city, Tsume starts to become deeply attached to him. Over the series, the relationship between Tsume and Toboe grows until reaching a common situation in the Japanese anime (a strong relationship between the young and weak boy and the older "senpai"), but (despite a number of un-canonical yaoi fan interpretation) never becomes explicitly romantic.