なでこスネイク 其ノ貳
Nadeko Snake Sono Ni
Nadeko Snake – Part 2

Oshino informs Koyomi that Nadeko is under the effects of a Snake Constrictor, a snake spirit that slowly constricts the life out of its victim. Nadeko explains that it is a curse a classmate placed on her after Nadeko inadvertently rejected the confession.