Love Me to Death S01 E05 The Beginning of theEnd

Ishiguro Souma (Hosoda Yoshihiko) visits Detective Tomizawa (Yamaguchi Makiya) with the interview data on Kamishiro Masato (Narimiya Hiroki) that Minamizawa Yuhi (Kumada Rinka) risked her life to obtain. The data reveals a truth about Masato that is hard to believe. Masato's past and true nature are revealed. What is Masato planning?