“Wei didn't commit suicide...but was killed by others.Mio (Rina Kawaei) said that the death of her sister Yui (Riko Narumi) might have been homicide. Yui's ex-boyfriend detective Tachibana (Uesugi Hiiragi) told her that Yui had investigated a man named Tatsumi Koji before his death..He is the leader of the Half Gray Group, involved in various criminal activities such as special fraud and drugs, and sometimes even kills people.The police also want to catch Tatsumi, but so far they haven't found where he lives.Wei was investigating Tatsumi's whereabouts on his own, and he was probably killed because he had mastered important information about Tatsumi...” The Xiao Wei I know is not the kind of person who would commit suicide...“.In order to catch Tatsumi, Mio asked Yui for the information she left about Tatsumi.However, the sudden and shocking news caused Mio to be confused.Sister..., was killed...?

Mio couldn't bear it alone, so she went to Taiga's room to discuss things with him at night. However, Taiga seemed to be secretly going somewhere every night recently, and for some reason he didn't go back to the dormitory at all...

In front of Mio like this, a new powerful character appeared.The only daughter of Kagami (Arata Furuta), Reika (Miori Takimoto), returned from studying in the United States! Reika has a dignified appearance, and her skills as a surgeon are also top-notch.Before studying abroad, she and Dahe discussed marriage, which has become a legend in the hospital...

Reika immediately focused on Mio and seemed to know Mio's secret... Mio was unknowingly involved in an ”incredible plan%...!

What is Reika’s purpose!? Where is Taiga going!?Also, the incredible truth behind my sister’s death….