The King of Pigs (2022)

Two friends, Kyung Min and Detective Jong Suk, reconnect after receiving a message from a friend they haven't heard from in 20 years. The message triggers painful memories of their school bullying, and soon after, a series of mysterious murders begin. As Jong Suk investigates, he uncovers connections to the past, while the drama explores the origins of school violence and its enduring impact on society. (Source: MyDramaList) ~~ Adapted from the animated film "The King of Pigs" (돼지의 왕) by Yeon Sang Ho (연상호), based on a true story.