Karen Touno (塔野カレン) is a supporting character in The Tunnel to Summer, the Exit of Goodbyes, voiced in Japanese by Seiran Kobayashi. The series' music includes "The Tunnel to Summer, the Exit of Goodbyes Theme Song FULL「Finale.」- eill | Lyrics", "The Tunnel to Summer, the Exit of Goodbyes Theme Song FULL「Finale.」- eill | Lyrics".