Sasaki Shuumei

Initially, Sasaki is presented as a bright and cheerful upperclassman, albeit overly anxious; however, this is not necessarily the full picture. He can be impulsive, acting or speaking without thinking about the consequences or the people around him. He can be a bit apathetic at times, both with his friends and with his family.

His personality can drastically change when around Miyano, showing a more cheerful, caring, and somewhat flirtatious side of himself, as well as trying to be as careful and soft as possible in his manner of speech. He is protective of Miyano and shows a more intimidating side of himself when someone bothers him, even scaring Ogasawara.
VOICE REFERENCE https://youtu.be/7GzpgtaHnOA?si=6d-0U1psLxKTsYyo