Phrase prompt—Birthmarks are where you were killed in a previous life

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"Did you know?" Kōki's voice was low and he traced his fingers lightly over Seijūrō's chest. "There's a myth that birthmarks are where you were killed in a previous life." He was lying next to Seijūrō, the bedcovers around his waist as the tree outside the window danced in shadows across his skin.

Seijūrō's breath stopped when he kissed the birthmark over his heart. "What made you think of something so dark?"

"Well, think about it. If you hadn't died then, you wouldn't be here now. The system would be all out of whack." He traced the shape of it, one corner of his mouth quirked up.

"You don't think we would have found each other anyway? If we're going to take stock in reincarnation then we have to think the same about soulmates."

Seijūrō couldn't understand how the sun didn't dim in comparison to Kōki's smile. "You're right."

"But anyway," he continued. "I'd rather think of it as our own choice than fate. Instead of something out of our control and due to the whims of some inaccessible force."

But at that, Kōki's expression twisted slightly and he turned around. "Kōki?" Kōki's shoulder was warm when he tried to pull it back. "What's wrong?"

"Eh, it's nothing." He waved a hand dismissively.

"Kōki."

He glanced behind him. "It's just… I can see myself choosing you, obviously, but I don't see why you would choose me. I feel like I have to worry for your good sense or something."

It was almost laughable, looking at him now with the sun in constellations over his bare skin and the red sheets making him glow, his hair in a halo around his head. You're an angel, aren't you, Kōki?he thought, kissing a freckle on his shoulder.

"You're lovely, Kōki."

"I'm completely normal."

"Not exactly," he said, thinking in amusement of what had just happened before. "Someone normal would not have done what you just did to me…" He laughed when Kōki blushed bright red and covered his face with his hands. "And besides. I love normal."

The sardonic look was marred by the fact that Kōki was still blushing. "That's not enough."

"It isn't?" He brushed Kōki's hair back. "How about you're the kindest and strongest person I know?"

"You're not allowed to lie!"

Seijūrō covered his mouth with his hand. "Let me talk, love." Kōki's eyes widened. "I wasn't lying. You're exactly what I need. And I'm better for being with you; everything's… lighter now that you're the most important thing in my life."

"I suppose you were under a lot of pressure." He put his hand on Kōki's neck and traced down as his heart beat erratically. "But you're not acting that much differently with anyone else."

"You're special."

"Don't say it like that," Kōki groaned. Seijūrō lay back and enjoyed his blush. "What do you want to do tonight then?"

"Hmm… how about Italy?"

Kōki had been sitting up and starting to look around for his clothes but shot a startled look at him. "I beg your pardon?"

"We can go to Italy for the weekend. It is a special occasion, after all." Kōki looked slightly confused and Seijūrō bit back a smile.

"Special… oh!" Seijūrō raised his eyebrows as he smiled sheepishly. "I didn't forget," he lied, leaning forwards to kiss him. "Happy anniversary."

"Hmm. Very convincing."