Ultraman Tiga: S1 E47 - Goodbye To Darkness Ultraman Tiga

A strange electrical accident happens while Horii is out on a date. The incident is caused by a monkey who experienced a sudden mutation after being implanted with Evolu cells. Horii combs through the data left at the research lab to solve the case. During his search, he reunites with Sayaka as she tries to make amends for a past tragedy...