Kiyoshi Yokokawa

"Now, Dad's gone too... He's dead too... Dad...
 * -Seita to himself after learning his father's death."

Kiyoshi Yokokawa (横川 清 Yokokawa Kiyoshi) is the captain of the Japanese navy army, the husband of Mrs. Yokokawa and the father of Seita Yokokawa and Setsuko Yokokawa.

Appearance
Kiyoshi has brown hair and dark eyes. In a flashback, he wears a black captain hat and a black captain uniform but a photograph shows that he is seen wearing a white captain uniform.

Plot
Kiyoshi was supposedly in the navy during World War II where Seita Yokokawa and Setsuko Yokokawa attempt to write to him several times, but they never received any reply from him.

Much later at the bank, Seita overhears that the Japanese has lost the war and the entire fleet of ships has been sunk, which causes Seita to become astonished that he finally realizes why his father hasn't written back to them.

Relationships

 * Mrs. Yokokawa (Deceased Wife)
 * Seita Yokokawa (Deceased Elder Son)
 * Setsuko Yokokawa (Deceased Younger Daughter)

Etymology
Kiyoshi Yokokawa 火垂るの墓
 * The name Kiyoshi means "pure" (清).
 * Kiyoshi's surname Yokokawa means "side" (横) (yoko) and "river, stream" (川) (kawa).