Two hours and a rather appealing dinner later, Undertaker lay on their bed with his chin on Sebastian's shoulder, his arm laying across the demon's chest. The reaper sighed softly and ran his nails lightly over his demon's chest, making Sebastian quiver slightly every so often.
When Sebastian finally couldn't take it, he took Undertaker's hand in his own and turned his head to kiss the reaper. "You must be tired Taiki… get some rest…"
"You're even calling me that?" Undertaker muttered against Sebastian's lingering kiss. The name didn't suit him, besides, it was only Grell that called him that. "I thought that name would be left for Grell to call." H said, pulling away from Sebastian so that he lay on his back, looking up at the ceiling and pouting slightly.
"Oh come on," Sebastian muttered, rolling over so that he straddled Undertaker's hips. "It's far less to moan." He leaned down to kiss Undertaker, who promptly dodged and turned his head so that the kiss landed on his cheek.
"How would you feel," Undertaker stated, pushing Sebastian off of his hips. "If I started calling you Sebas-chan?" He smirked when the demon visibly shuddered and sat up once Sebastian was off of him all the way. "Exactly as I thought." He grinned over at Sebastian and crawled out of bed. "I'll be back later…" He muttered as he stood and tied up his hair loosely before pulling on a hoodie that came past his knuckles.
Sebastian looked downcast but nodded. "I'll see you later…" He muttered, watching as Undertaker left the room and then the apartment.
With nothing left to do with his partner, Sebastian stood and made his way to the kitchen where he commenced to boil water to make tea for himself. He stared down at the water as it boiled, thinking how that was the first argument he had ever gotten into with Undertaker. It couldn't really have been an argument, he's just mad at me for calling him Taiki…
Sebastian shrugged off the notion and began making himself some Earl Grey, humming slightly to himself as he let the tea steep.