The story revolves around a group of people who gather in a stately mansion, the scene of a massacre from the past, to perform the ritual of the 'Red Book'. With the help of spirits, they try to reconnect with their deceased loved ones.
Kyohei Aizawa, an assassin for a covert non-governmental espionage group in Japan called "SEEK", is grieving over the loss of his girlfriend from a tragic plane accident. The leader of "SEEK",Ryo Mikumo, contacts him for an emergency mission; save a fellow agent, recover a new highly explosive liquid called "RDX@", stop a ruthless Yakuza leader, Sojiro Kotsuki, and his gang before they take over Japan. Although the Ninjas were thought to have disappeared... the new breed of assassins live on helping to protect Japan and all that is right; the Ninjas are coming soon.
过着平静生活的南吉看到京美锻炼身体后暂时忘记了善美，并开始爱上她。然而，深爱着善美的南吉却在善美和京美之间产生了矛盾
随着本田在工作中犯的错误越来越多，鸟山经理开始担心并叫她来接受辅导。她认为自己无法专注于工作是因为家庭问题，因此向本田询问她与丈夫的关系。然后，当鸟山发现本田夫妇目前没有性生活时，他当晚就去见本田的丈夫，对他进行性教育。本田的丈夫从未听说过这种情况，最终接受了鸟山的性教育。此后，本田的丈夫开始在鸟山手下工作，通过这件事，本田得到了公司的认可，工作能力也得到了提升
