I'm in Trouble in the Magical World, but Fortunately I'm a Genetic Saint

No system+Single heroine+Semi-invincible If technology and magic civilization appeared in front of you at the same time, would you choose technology or magic? Oh, I forgot to mention, that magic is also made up of technology. So I wanted to go back as soon as I arrived. What a pity... I seem to be regarded as a powerful person by a certain pair of eyes...