I Became Friends with the Second Cutest Girl in My Class (WN) - Chapter 8: Chapter 8 – The Second Time

An advertising director is reborn in 1988 Hollywood as an eighteen-year-old blond-haired westerner named Eric Williams.

From then on, he starts writing movie scripts and television songs, becomes skilled in directing every kind of film, wins over all kinds of female celebrities, and takes the road to become a Hollywood legend.

- Description from Novelupdates

Yakuza, originally refers to the most stinky card in the Japanese flower letter, whoever gets it will inevitably curse.

A young director traveled to Japan in the 1980s, and he inexplicably became a Yakuza named Takeshi Iwata.

As a result, a wonderful journey of Japanese movies started like this.

- Description from novelbuddy

On his usual way to home Mikado Tsuchio fell into a hole that suddenly opened on the ground. Just like that, Tsuchio falls in a different world, he lands on a Grappler Wyvern and manages to tame it.

Tsuchio decides just like that to live in the other world, the reason for his quick decision: he wants to make a monster girl harem.