Guy who discovered he was an alpha found himself fated to pair with an older omega. However, he has trouble accepting this due to the omega's roughness. Omega however truly believe they're meant to be.
Kind of cute.
hmmm...
seme vampire is open to sleeping with anyone who asked for it including the boy he's been raising. a bit iffy and I'm still not quite sure about the heart part.
Meppou Yatara to Yowaki ni Kiss