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.
That's basic knowledge.
.الكلّ يعلم ذلك
Todo el mundo lo sabe.
Eso lo saben todos.
Tout le monde sait ça.
Lo sanno tutti.
Isso é conhecimento básico.
Об этом все знают.