I want anime and doujin novels, harem, invincible protagonist, best if it's a comprehensive manga.

Answer 1

If you want the harem protagonist to be invincible, it's best to be a comprehensive manga. You can refer to the following example:
The main character of the Doujinshi novel, Ye Xiu, was an expert gamer who had a harem and was invincible in the game. The novel began with Ye Xiu returning to the past, transmigrating into the world of the full-time experts, becoming a clone of Ye Xiu and beginning an adventure with Ye Xiu.
The main character of the Doujinshi novel, Wei WuXian, was an immortal cultivator who had a harem and was invincible in the game. The novel began with Wei WuXian transmigrating into the world of the founder of the demonic path, where he had a series of interesting events with various women.
The main character of the Doujinshi novel, Alan, was a giant hunter who had a harem and was invincible in the game. The novel began with Alan transmigrating into the world of the attacking giants. In this world, he had a series of adventures with various women.
The main character of the Doujinshi novel, Akijiro, was a ghost hunter who had a harem and was invincible in the game. The novel began with Akijiro transmigrating into the world of the Blade of Ghost Destruction, where he fought a series of battles with various women.
Kirito, the main character of the Doujinshi novel " Sword God Realm ", was a gamer who had a harem and was invincible in the game. The novel began with Kirito transmigrating into the world of the Sword and Sword Realm. He had a series of adventures with various women in this world.