It's Japanese. It's a combination of characters meaning "great power" and "godsend".
[Peter needs little encouragement, but likes the way Prompto does it. He starts at the shoulders, feeling down along Prompto's arms and back up to skim down his chest. His thumbs circle around Prompto's nipples to work them to hard nubs, then he feels down to the man's pants.
He nudges Prompto's lips with his tongue, fisting his hair gently. Eventually Peter pulls away to start kissing the man's jaw and down his neck, teeth lightly scraping the skin]
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[Peter needs little encouragement, but likes the way Prompto does it. He starts at the shoulders, feeling down along Prompto's arms and back up to skim down his chest. His thumbs circle around Prompto's nipples to work them to hard nubs, then he feels down to the man's pants.
He nudges Prompto's lips with his tongue, fisting his hair gently. Eventually Peter pulls away to start kissing the man's jaw and down his neck, teeth lightly scraping the skin]