Summary: Blood Stalk was the one who framed Ryuga Banjou! Sento was able to
discover that the identity of Blood Stalk, is Soichi Isurugi! As Soichi
escapes with the Fullbottles and the Pandora Box, Sento begins to
remember the first time he encountered Soichi... It was a rainy day, and
the Kamen Rider was fighting against Blood Stalk...