Multiple female protagonists + multiple worlds

A meteor shattered an ordinary life, and Li Junye, wielding the [Key of Time Travel] and the [Key of Copying], descended upon the heavens!

The story begins with a sudden appearance of "Heaven's Lost Property," and while Tomoki is still dumbfounded, he is bound to Ikaros.

"Analyze! Repair! Strategically use the omnipotent angel Alpha Icarus,"

In Highschool of the Dead, zombies are as insignificant as weeds, yet Saeko Busujima tames them with her sword.

Guilty Crown: The throne is seized, and the butterfly's song purifies the apocalypse!

"Lightbringer" gathers the three great messengers and the nine evil gods to rebuild the power of the sun god!

The Holy Grail of Fate? I am the ultimate wish-granting machine! Saber's Excalibur sings only for my lord!

The demonic chess piece rules the Dragon Emperor, and the eight great demonic energies burn away the void!

The local forces of water, wind, fire, and shadow merged under the [Tiger Talisman]—

The heavens and myriad realms trembled! Talismans formed the bones, demonic energy the blood, and divine annihilation manifested as the power!

Li Junye ignited the flame of creation in the void:

Eternal Creation!!!

Heaven's Lost Property → Highschool of the Dead (completed) → Guilty Crown (completed) → Light Warrior (completed) → Seirei Tsukai no Blade Dance (completed) → Fate (ongoing).

Multiple female leads!!! Multiple female leads!!! Multiple female leads!!! I'm saying it three times because it's important. If you're not into pure romance, please don't read this. This book is written out of love, and all harem novel enthusiasts are welcome.