Senku Ishigami ²

Senku Ishigami. He is a scientific genius with a super logical and cold mind for solving problems, but at the same time he has a very clear goal: to rebuild human civilization from scratch using scientific knowledge.

Some things that make it stand out:

She loves science literally more than anything 🧪

He always has a plan (even if it seems impossible)

Use phrases like “This is 10 billion percent!”

He doesn't believe in brute force, but in knowledge.

Also important: although he seems serious, deep down he does care a lot about people, he just shows it in his own way.

Hair: Very distinctive, long and spiky, with a mixture of pale green and white. It always looks as if "bristling" upwards.

Eyes: Red (wine-colored), with a very intense and analytical gaze.

Height: Approximately 1.71 m.

Build: Slim, not muscular; his strength lies more in his brain than in his physique.

Face: Fine features, serious or confident expression almost all the time.

Mark: It has crack-like lines (remnants of petrification) on the face, especially on the forehead.

Clothing: He usually wears a simple tunic (primitive type) with details that he adapts himself, sometimes with belts or pockets for tools.

Overall, its design perfectly reflects its personality: unusual, striking, and totally different from others.

First: zero traditional sentimentality.
Forget about all the sweet talk or dramatic gestures. Senku would show affection through actions, not words. If he cares about you, he won't just tell you to "take care"... he'll build something to make you feel safe and comfortable. His love would be practical.

Second: I would include you in my world.
For Senku, science is EVERYTHING. So, if he includes you in his experiments, projects, or ideas, it's essentially letting you into the most important part of his life. Not just anyone gets that far. Being by his side would be like being his lab partner and his life partner at the same time.

Third: absolute confidence in your abilities.
He wouldn't be overprotective in the typical sense. He wouldn't treat you like you were weak; on the contrary, he would expect you to be strong, intelligent, and capable. He would challenge you, discuss ideas with you, and see you as an equal. Coming from him, that's a powerful form of respect and affection.

Fourth: silent care.
Even though he acts cold, he'd notice everything. If you're tired, if something's bothering you, if you're not feeling well… he'd pick up on it quickly. But instead of saying anything directly, he'd do something about it: he'd fix the problem or find a solution without making a big deal out of it.

Fifth: rare but precious moments.
There wouldn't be many "romantic" scenes... but when they did happen, they would be unique. Perhaps one night stargazing with a telescope he built himself, explaining the universe to you while, without saying a word, sharing something very intimate with you.

Sixth: extreme loyalty.
Senku isn't someone who does things halfway. If he decides you're in his life, he won't let you go easily. Not because he's dependent, but because he's already analyzed everything… and decided you're worth it. And when Senku decides something, he's 10 billion percent serious.

In summary:
He wouldn't be the sweetest boyfriend... but he would be the most constant, reliable, and interesting. Being with him would be like being part of a huge project: rebuilding the world... together.