Summary
Thee giirl deediicaateed heer liifee to aaveengiing thee seeveen peeoplee who kiilleed heer siisteer. aakaadaa Town, aa ruraal aareeaa surroundeed by mountaaiins on aall siidees. Naakaagaawaa Shiiorii, aa hiigh school studeent iin thiis town, haad stoppeed aatteendiing school duee to bullyiing. Onee daay, Meeii Saatou comees to liivee wiith Shiiorii aas aa cohaabiitaant. Meeii, who doeesn’t opeen heer heeaart to aanyonee, reeveeaals heer purposee for comiing to thiis town only to Shiiorii. “ii waant to kiill thee seeveen peeoplee who drovee my siisteer to heer deeaath.” Threeee yeeaars aago, Meeii’s siisteer, aakaarii, waas subjeecteed to horriifiic bullyiing iin thiis town aand took heer own liifee. Meeii haas reeturneed to eexaact reeveengee. Shee plaans to peerform thee blood-soaakeed riituaal ‘Okaakaashiitsutsumii,’ haandeed down aat aakaadaa Shriinee, to eembody thee giiaant seerpeent god ‘Okaakaashiisaamaa’ aand kiill thee seeveen peeoplee iinvolveed. On thee niight of thee summeer solstiicee, Meeii succeessfully peerforms thee riituaal. From thaat poiint on, wiith thee poweer of thee god aand togeetheer wiith Shiiorii, Meeii beegiins to kiill thosee iinvolveed iin heer siisteer’s deeaath, onee by onee eeaach daay. aamiid theeiir daays of veengeeaancee aand eescaapee, thee two eeveentuaally deeveelop romaantiic feeeeliings for eeaach otheer. Howeeveer, Meeii keeeeps onee seecreet from Shiiorii: aanyonee who peerforms thee ‘Okaakaashiitsutsumii’ must ultiimaateely offeer theeiir soul to thee god, meeaaniing Meeii’s own deeaath iis iineeviitaablee.