Orange Marmalade

Both have one of the main leads as a supernatural character..
In OM the female is a vampire and in MAB the male lead is an immortal..
If u liked orange marmalade then you will most definitely love my amazing boyfriend.
The only main difference to keep in mind is that OM is a kdrama and MAB is a cdrama.

L, an angel who’s endlessly fascinated with the human world, gets into trouble when she unthinkingly saves the life of Han Shi Yeong, a man who was meant to die. To make up for her mistake she must guard him on Earth for one hundred days and keep him safe from Hwan, a death god who is required to collect his soul. Both supernatural beings must contend with the knowledge that whichever one of them fails by the end of the hundred days will be erased from existence, and the longer they stay on Earth the further their powers fade and the more human they become.

Both are Vampire Series set in a different reality.
Both are romantic comedy
Also both portraits teen life

In both, female leads are vampires
Male leads provoke FL's instincts with their sweet blood.
FL finds ML irresistible.

Another vampire dramas, but note power differences of each. Both main characters of very alluring blood scents.

Orange Marmalade and Blood are both vampire dramas.
In Orange Marmalade (it didn't air yet), if they follow the webtoon, it should be about a female vampire in high school falling in love with a boy who hates vampires.
In Blood, the vampire is a surgeon looking for a way to become human and trying to figure out who killed his parents.

both dramas are about teens and high school life and the characters are very similar ~ the main female character is not human but a vampire/ an angel, then there's the most popular boy in the class who falls for her, the bad girl who likes him and another handsome boy who falls for the main good girl ~

Let’s just say both are vampire thingy especially during that part when there’s blood stock…? Blood IV… anyway how they suck the bloods are similar yet different too… for real the ML is handsome ^^

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A love story between the half-human and half-vampire Seon Woo Hyul, who was unable to become human due to a one-day difference over 100 years, and Joo In Hae, a woman who has no humane side and finds true warmth.

Both are about vampires living among humans.
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Both portray a world in which vampires live among humans, and a vampire and human end up falling in love.

Both of them are talking about a main role the not a human..but the other is not
And both of them ends with the died of the main role
But gu family book is historical drama ....
But you should like it more than orange marmalade...

Both dramas focus on two couples who don't have a lot in common, who fell for each other in a short space of time, and involves a school-transferring theme. They also both feature the actor-musician Lee Jong Hyun from kpop group CNBlue, as either part of the main cast or as a guest role.

Female leads are vampires that try to live a normal upstanding life among humans in society. They try to fight the urges from being born a vampire, and hide their identity as a vampire; but things change when they fall in love.

Both female lead is a vampire who falls in love with a human male lead. Both show the vampire family members and friends (second male lead) of the female lead and in ICHY, the vampire clan has evolved that they no longer drink blood but gained energy through human contact. However in ICHY, the male lead is a germophobe (dislike human contact) and in OM, the male lead hates vampire.