Kurome :

Nui Harime :

Rachel "Ray" Gardner

Daniel: "Note to me, making sure Ray's smile always stays on."

Nonon Jakuzure

 Possibility of being in Daniel's harem :

Asia Argento :

Daniel: "Ignore and fuck Issei. Asia, you deserved better in life but...the world fucked us both. Join me and we'll rule hell."

Koneko Toujou :

Daniel: "Kitty Cat's cute, right guys? Meow."

Sona Sitri :

Daniel: "Are you really smiling at me or smirking? Which is it? C'mon, tell me!"

Serafall "Levi" Leviathan :

Levi: "Come here, Danny~"

Daniel : "Get away from meeee! Soooooooooooonaaaaaaaaaaa heeeeeelllppp!"