十月某日、暦は妹の月火の相談に乗ることになった。月火の所属している茶道部に不思議なお化けの噂が広がっているという。月火は全くそれを信じていないのだが、不思議な噂を信じる他の部員たちと噛み合わなくなっているとのこと。
A weekday in October. Tsukihi vents her frustration on Koyomi. --- The students in tea-ceremony club began to say that they sometimes feel the presence a ghost in tea-ceremony room at Tsuganoki Middle High School where Koyomi's sisters attend. Tsukihi also belongs to the club, she doesn't believe a ghost that's why she is under stress between her and others.
