Dan Gotanda

As the protective older brother of Ran, this character shares a long-standing history with Ichika dating all the way back to their middle school years. His deep-rooted connection to the main cast provides a meaningful link to their shared past, blending familial ties with old childhood friendships. Through these established relationships, he serves as a familiar figure within the story's social circle, bridging the gap between the characters' current lives and their formative school days.