Happy Sugar Life - Season 1 Episode 3 A Long Monochromatic Night
Overview: When Asahi gets attacked by a group of thugs, Satou and Mitsuboshi protect him. Satou senses that Asahi and Shio are connected to each other through a special relationship, and is almost overcome with anger. Meanwhile, Shio starts to worry when Satou is late coming home, and leaves the apartment to search for her around town at night alone.