Kaoru no Chichi (カオルの父) is a supporting character in The Tunnel to Summer, the Exit of Goodbyes, voiced in Japanese by Rikiya Koyama. 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".