Just before a date with Osanai, Kobato runs into Kengo, who shares some disturbing news and leaves a strange message. Together with Osanai, Kobato tries to solve the mystery. However, shortly after, it appears that Osanai is in great danger.
and Kengo's girlfriend's 
older sister got roped into joining.
.وتمّ إغراء الأخت الكبرى لحبيبة كنغو للانضمام
donde se metió la hermana mayor
de la novia de Kengo.
donde se ha metido la hermana mayor
de la novia de Kengo.
dans lequel est impliquée
la sœur de la copine de Kengo.
in cui è rimasta invischiata 
la sorella maggiore della ragazza di Kengo.
em que a irmã mais velha da
namorada do Kengo foi envolvida.
И втянула в свои ряды
сестру девушки Кэнго.
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