Monk's sister needs help!

Here at SPR our cases have been getting worse, & Mai's powers have been growing. I'm takagawa, but everyone calls me monk. John brown has just got back from Australia, Lin & Naru got back from England, Ayiko got back from America with Mai and masako, and yasu just got on summer brake. And I'm with my younger sister who was about to go on stage. Yeah I have a sister. Read to know more!