C75 Gate of Heaven

"What a big cloud!" "What on earth is this?" Abigail asked, looking up at the mountainous cloud before her.

"I don't know, but since it's floating in the sky sea, it's not an empty sea." Yamaguchi rubbed his chin as he looked at the strange clouds in front of him.

"It would be great if it was just an ordinary cloud, but I don't know if this kind of cloud can be passed through