Paranoia Agent (2004)

S1E1 Enter Lil' Slugger

Tsukiko Sagi, a timid character designer, finds herself unexpectedly assaulted by an individual wielding a golden baseball bat. As two detectives question her about the incident, she recounts her encounter, describing the assailant as a young boy, likely in elementary school, who was sporting golden inline skates and a bright red hat.