Supreme Husband System! & Supreme Wife System! - Chapter 218: A side effect?

One day, Yoichi who grew up while not knowing his parents has received the news of his father’s death. His father left behind a testament——which said he is to pick only one out of five ‘little sister candidates’?!

In his old world, Aiden Ferith was a peerless war hero—feared by nations, revered by millions. Through years of brutal cultivation, he reached heights others only dreamed of. But glory turned to ash when his most trusted disciple drove a blade through his heart, shattering his empire and his soul.That should have been the end.But fate had other plans.Reborn in a world ruled by magic, where mages manipulate elements and battle with dazzling spells, Aiden awakens in the body of a seemingly average boy named Logan Smith. Here, cultivation is unheard of—dismissed as a myth, or worse, a joke.But what they don’t understand will be their undoing.Armed with ancient cultivation techniques that bypass the limitations of magic, Logan begins to carve a path that defies the laws of this new realm. Stronger, faster, and more resilient than any mage, he’s not here to play by their rules.He’s here to break them.Betrayed once.Stripped of everything.This time, he’s not fighting for a kingdom—He’s here to live life on his own terms—to protect those he loves, and finally, to live for himself.

You take up a student career.

Student career upgrade to lv.7

Acquired skills: primary school knowledge, junior high school knowledge, high school knowledge.

You take the college entrance examination,

You got a perfect score.

Your basic occupation has been upgraded to lv.9, and the job transfer system has been activated.

You change jobs to become a scientist, you gain R&D skills

You use research and development skills to get space fortress construction technology

You use R&D skills to gain starship technology.

You are invincible.

- Description from novelbuddy