With senior year approaching, Tenma and the gang start to panic when they realize they've made no progress in love this past year. There aren't even any school functions left to make memories with Karasuma-kun … So why not make their own? Thus, the first Yagami City Walking Festival is born! Tenma's so excited to be able to walk with Karasuma-kun, but on the day of the festival he's gone! Why?!