In the manga and anime "Tokyo Revengers," the characters cope with feelings of loss and grief in various ways. Some characters turn to violence and seek revenge to deal with their emotions, while others find solace in the support of their friends and loved ones. Additionally, some characters try to find closure by seeking justice and making positive changes in their lives. Ultimately, each character in "Tokyo Revengers" navigates their feelings of loss and grief in their own unique way, contributing to the complexity of the story and character development.