When Jiamo somehow transmigrates to the Hunter world, where the mortality rate is sky-high: no big deal.
When he somehow becomes the eldest son of the Zoldyck family: Don't panic, no big deal.
When he's inexplicably chosen as a candidate for the next Zoldyck family head and even gets a game screen about Sky: Children of the Light: Now that's a huge problem!
This is the tragic tale of someone who transmigrates into the most promising eldest son of an assassin family and happily (?) becomes a doting big brother.
A little scene from the author's imagination:
Big brother: "Hey, you with the red hair, and you with the spiky hair, stay away from my adorable little brothers! And Kikyo, stop sitting in your room all day and go outside once in a while. Wait, Kalluto! How did you end up joining that group of perverts?! And you, Father, hand Alluka over already!"
The younger brothers: "Big brother, you're seriously overreacting..."
Theme: A doting big brother is invincible.
