Ouji no Honmei wa Akuyaku Reijou Temporada 1 Episódio 4

A mysterious envelope arrives with a cryptic message, but Diana ignores it and goes to sleep. When she wakes up the next day, the person sleeping next to her is... Spica, Dianas cousin, and another of Chriss targets. With his appearance, Siriuss behavior is different from usual... is there turmoil on the horizon?