It was an early evening. The bar was still closed and there wasn't much to do today after the university, especially since she didn't have the mood for visiting BAE with Kiyoko. Going home wasn't an option too, though, and Kou made something that seemed a pretty sound decision: go for a walk. Autumn leaves, early dusk coming in... it had a pretty nice atmosphere, combined with a small, not-yet-chilling wind blowing from time to time. The picture was quite perfect, and one might've easily sat there and draw the inspiration from the scenery- "Hey, big sis, Ryuu-kun was always interested in how does kiss feels like..." —unless there was one feral cat spoiling the calmness of the moment. "... would you be nice enough to show it to him?" "How about I show it to you instead, Ryuu-kun?" with a smile, she came up to him, waving a hand in a dismissive manner as a signal for the girl to go away. She didn't have to be told twice, it seemed. Kou was relieved. "Ooh? What a coincidence, Kou! And such readiness too~ but," Ryuu didn't waste his time, coming closer and shortening little distance they have left between each other, "aren't your lips tainted by numerous people already?" She couldn't help but laugh, albeit bitterly. "They are. But don't you think tainted lips of a human are best fit for Compra Big Demon King?" "Oh! Oooh! You remembered!" And just like that, his voice has lowered significantly as Ryuu traced Kou's lips with his fingers. "Well, I guess that calls for a small reward— for both of us." He didn't hesitate even a moment. It felt like it wasn't his first kiss, too, given how hungry and intense it was. Kou wasn't the one to just stay and wait, though. She kissed him back, shortly pulling away only to lick Ryuu's lips with a sly smile before going in for a kiss once again. This one, initiated by her, was tender and soft. Until Ryuu bit her lip hard, licking off the small amount of blood starting to appear. "Ahaha! Now Kou is marked by the Demon King~" he laughed cheerfully, twistedly, looking amused by his doing as he pulled back. "Ryuu-kun wonders, what will Kou do~?" She didn't need to think twice before answering. "Cherish it, of course," she licked off the blood, facing Ryu with a smile once again. "It's not every day you get to kiss a demon, is it? I just hope Ryuu-kun was satisfied with the kisses shown to him." "Ryuu-kun was! But he might come back for more, you know~" "I will be waiting." It took him a moment to reply to that simple phrase he didn't seem to expect. "... you're so easy, Kou." "And I suggest not to call me easy, Ryuu." "Ooh, scary~" "Now, shall we go for a walk together?"