Eric has a crazy genius brother who has been able to invent all kinds of weird high-tech creations since he was a child. He graduated from MIT at the age of 17 and has been disappearing since then. Books about alien aliens, outer space plants, and weird characters will occasionally pop up at home from time to time...
He could tolerate all of this, after all, it was all crazy and novel to a typical British teenager, until he was sent to alien planets several times for no reason and encountered various dangers, and was rejected by the brother who was the instigator.
So the two continued to have a stalemate for a long time. Of course, this was initiated unilaterally by Eric. The poisonous, cold, and nerdy brother never changed his weird temperament and was incompatible with the world, including his own brother.
But - but all of this changed from a seemingly ordinary daily time travel by Eric. Just like gently leveraging the gears of fate, everything went off the rails.
The vicious-tongued genius scientist x the energetic and reckless boy (will grow up)
Concept: One may fall in love with the most unimaginable person