Tbh my guilty pleasure character is Korekiyo I'd say, and any ship with him is a guilty pleasure ship
My biggest guilty pleasure ship with Kiyo is kiyochi baybee.
Korekaito and Amaguji are good ships too with him. Maybe Kaito seems a bit more out there, but I think his love of space would work extremely well with Kiyo’s passion for cultures, which would include myths about the stars. And ofc Rantaro’s experiences are a perfect match for him too. They’d have a lot in common to talk about.
Kiyochi with a prompt from this list: Kiss on the neck
“This one’s Rex,” Kurochi explained, leaning back against Korekiyo’s chest, lifting his hands above his head.
It brought Korekiyo face to face with one of Kurochi’s pet snakes. He nodded, as if in polite greeting to the small creature entwined about his hands. “Mmhm, I see.”
Smiling fondly at Rex, Kurochi lowered his hands again, running his thumb gently over its body. “He’s pretty good about being held. The others don’t really like to be handled, but Rex will actually crawl into my hand when I put my hand into his tank.”
“Sounds precious.”
Kurochi could go on for hours about something that interested him once he latched onto it, and his snakes were one of those topics. Korekiyo was perfectly content to let him. The brightness that emanated from him, the slight fidgeting from his barely-contained excitement touched Korekiyo’s heart. He listened with fondness and, as Kurochi chattered on, an increased sense of longing, until he couldn’t take it any longer.
“Yeah. I feel like he really recognizes me, you know? I really love having him around it’s very--ah! Hey,” Kurochi giggled, cut off by lips pressed against his neck. He rested his free hand against Korekiyo’s head.
“My apologies,” he purred, though absolutely not sorry, as long as Kurochi didn’t seem bothered by it. “When you talk about your snakes, and a great many other things you enjoy as well, you sound so passionate. It’s infectious; it makes you so irresistible.”
“Oh geez.” Kurochi turned his face, hiding his face behind Rex. It couldn’t conceal the lovely blush that formed in his cheeks. He was always so easily flustered. “You’re too much.”
He smiled, and decided that it’d be best not to mention that such a reaction made him all the more desirable to him.