[Battle in another world] + [The heroine is not a vase] + [With some transformation elements] + [There are daily foreshadowings] + [Idle area of the brain] Neither sword nor black, I am a super super super super newcomer
Yingxiu (acting as Galio), who has always been helpful to others online, was involved in a strange world of swords and magic and full of adventurers when he was involved in a mysterious "cyber quest for books" while sharing a mysterious number in a group. Only then did he realize that the "cunning" who asked him for books was the creator of that world, Naliya. She told Ying Xiu that the world was made up of forbidden spells, but these forbidden spells were exactly the same as those unorthodox numbers he had seen in his previous life. From then on, a journey of salvation for one person and one god was born.
Quite an explosive idea
The harem is still a single heroine