I Had a Summer Adventure...

Maaya Uchida

Catarina Claes (voice)

Tatsuhisa Suzuki

Alan Stuart (voice)

岡咲美保

Mary Hunt (voice)

Inori Minase

Sophia Ascart (voice)

Saori Hayami

Maria Campbell (voice)

増田俊樹

Sirius Dieke / Raphael Wolt (voice)

和氣あず未

Anne Shelley (voice)

Takehito Koyasu

Jeffrey Stuart (voice)

Sumire Uesaka

Susanna Randall (voice)

白井悠介

Ian Stuart (voice)

小倉唯

Selena Berg (voice)

Kōsuke Toriumi

Rufus Brode (voice)

Asami Seto

Geordo Stuart (as a child) (voice)

雨宮天

Keith Claes (as a child) (voice)

Mutsumi Tamura

Alan Stuart (as a child) (voice)

二宮みお

Young Lady (voice)

高田紗希衣

Child (voice)

大本なな子

Child (voice)

財満健太

Dragon (voice)

平松晶子

Catarina's mother (voice)