Machete Style Anime

Kasugano Mirai, a time traveler from the Celestial Empire.
Having been reincarnated into the anime world of Japan for over a decade, he has a sister with no blood relation and both parents are busy with work—a typical protagonist's life.
However, whether it's his younger sister, his childhood sweetheart, or that aloof minister, they all seem to be looking at him strangely lately.
His intuition told him that it was best not to delve too deeply into this issue.
To conclude:
Cherish life, stay away from women!