I don't remember much except MC is a boy, reincarnated in another world as a noble son or something similar. I'm not sure if there was magic in story. In first or early chapters, because everyone in the mansion/region are spectacular with talent, MC wants to be somebody in that world too by build modern appliances from the knowledge he had in previous world BUT turns out, in that world also have something similar such as oven, vacuum cleaner, air conditioner etc... But pretty sure those were not generated by electric.

Thanks in advance

Be kind or get banned

Nvm. I found it. It's called Ikemen ni Tensei Shita kedo Cheat wa Dekimasen Shita

I'm gonna add "modern technology" in its categories list for someone else easy to find

Be kind or get banned