The supporting character's harem is very normal - Chapter 322 Akna and Lilith

After crossing over to another world which seemed to be a fusion between many anime worlds, The Fantasy System was unlocked for Mu Fan. After finishing the tasks given by the system, Fantasy points are given which allows him to gain access to the Fantasy store that was full of daily talents and more.

Yuuki Asuna: You know how to cook a lot of dishes. Can you teach me?

Sagiri: I don’t know anyone called Eromanga-Sensei.

Many more characters and interesting plots await us.

- Description from Novelupdates

In the past, the giants of the heavens and the gods were destroyed after the reincarnation of the world! Cruel curse, eternal hatred, Tan Yun is determined to never sink again! For the sake of loved ones and relatives, from now on, step on the corpse of the enemy step by step to surpass the peak! Defying the sky, killing all worlds, I am the only one!

- Description from novelbuddy

In a world where the very fabric of reality is held together by fragile threads known as the Veil, humanity faces an ever-present threat from the void—a dark, consuming force that seeks to unravel everything. The ancient Guardians once stood as protectors, weaving powerful Knots to keep the void at bay, but their knowledge has faded, and the Knots are beginning to fray.Cole, an unlikely Weaver with the rare ability to sense and manipulate the threads of the Veil, embarks on a perilous journey alongside the skilled warrior Selene, the stoic guardian Marcus, and the enigmatic scholar Elara. Together, they must navigate a land ravaged by void-touched creatures and discover the forgotten secrets of the Guardians to repair the Knots and stop the void from consuming their world.But the deeper they delve into the mysteries of the Veil, the more they realize that the void is not their only enemy. Hidden forces work from the shadows, manipulating the fraying threads for their own gain, and ancient powers thought long buried are stirring beneath the surface. As the Knots unravel and reality itself begins to fracture, Cole and his companions must face not only the void, but the dark truths of their own world—and themselves.withHeart is a gripping, character-driven epic of survival, sacrifice, and the delicate balance between light and darkness. The series explores themes of destiny, power, and the fragile threads that bind us all together, weaving a story where every choice could mean the difference between salvation and oblivion.