I absolutely LOVE this manga and I reread it. But it gets confusing. So who reincarnated to who 😕 ? 😔
I only remember:

Princess Veronica-Minami
Rida-Takao
Ootomo - Carlo
Ryuuji - Gerald Frolio
Nishizono - Lilly
Maki- Sydney
Ooki-Carla
Hiroki-Bart

There is already a sound thread on Batoto, though it might not be up to date:

Who is Who- Theories and speculations

I'll write more about my own assumptions when I have more time.

P.S.: Please add a spoiler tag to this thread's title for all those who might fail to realise that everything in here would spoil the story.

[color=#8A795D]"Stories are what death thinks he puts an end to.
He can't understand that they end in him, but they don't end with him."

• Ursula K. Le Guin, Gifts[/color]

To be savoured:

• Blood Alone by TAKANO Masayuki
• Otoyomegatari by MORI Kaoru
• Gangsta. by Kohske
• Seishun Kouryakuhon by AKIZUKI Sorata