Cosplay Animal Vol. 13 (Kodansha, 2020)

Hajime's hospitalized father has gone missing. The gang searches for him, but it's Rika who discovers him attempting to burn his deceased wife's wedding dress. She tries to stop him, only to suffer serious burns, a mysterious piece of metal inside the dress scarring her palm... Feeling at fault for it, Hajime returns to the U.S. to help his father heal, asking Rika to break up over the phone. Where did this sudden request come from? To find out, we must look into the scars in Hajime's heart, scars he's borne since childhood...