Kotoko receives a request for help from a giant snake, who is the guardian spirit of Tsukuna Swamp. It appears that a murderer named Tanio Aoi disposed of a body in the snake’s swamp, but there’s something that’s just not sitting right with the snake. After learning about Kuro’s powers, Kotoko asks Kuro to accompany her on this journey, but Kuro declines for a certain reason...
It's no problem. 
That is my duty, after all.
.العفو، فهذا واجبي
Aber nicht doch.
Ist immerhin meine Pflicht.
No hay problema. Es mi deber.
No hay problema. Es mi deber.
Avec plaisir, je suis là pour ça.
Inutile de me remercier.
Oh, no, sto solo svolgendo il mio compito.
Não foi nada.
É o meu dever, afinal.
Что вы, это всё-таки мой долг.