Era of Castles: Starting with 99 Dragon Eggs - Chapter 126 - Kill Mobis!

After dying prematurely from an incurable disease, Yuka Hikano finds himself in a mysterious realm filled with endless doors, each concealing divine gifts from powerful deities. He is not alone—others who have met the same fate of death stand beside him, unaware of the trials that await.They are put through various tests and eventually transmigrated into different worlds. But these worlds are nothing like the Earth they once knew.For Yuka, however, this apocalyptic world feels eerily familiar. It is a realm of endless war, devastation, and chaos—a world he once played in a game. Certainly not the kind of place one would wish to be reborn into.From infancy to adulthood, he must gather strength, knowledge, and allies to survive the horrors that lurk ahead. But when he awakens a system granting him a power beyond imagination, he soon realizes that blessings can also be curses.[You have gained Infinite Mana.]Infinite Mana...?What could possibly go wrong?

Thirty thousand years ago, the Heaven Fighting Race who called themselves “Gods” invaded the Spirit Realm. Hundreds of races rose up in resistance, but ultimately suffered a crushing defeat. The Human Race was the first to concede, and the rest of the Hundred Races soon followed in succession.

Mu Haohao, the younger sister of the president of the Mu family, has a good appearance, a good family background, everything is good, but her life is a little shorter, at the age of 20.

Life is short so far, and relatives deeply regret at the funeral. Such a good girl has never even talked about love… Before the words fall, one, two, three, four, five men came… Each claimed to be a widow.

The deeds of the Sea King during his lifetime were exposed, and the scene of the rollover after his death was comparable to hell. The male protagonists have green lights on their heads, so angry that they are all reborn.

Blocked the shivering little girl in the corner and asked, “Speak, who to choose?!” – I thought it was a close competition, but only later did I realize that we… surrendered willingly.

[The heroine is not a sea king, but has hidden feelings] [1V1, Shuangjie] [Sweet pet, relaxed]

- Description from novelbuddy

In a modern world where cultivators need a place to cultivate or vent their boredom, there are private businesses that set up instance dungeons with the aid of technology and cultivation magic to enable cultivators to train and commoners to experience the life of cultivation. They are called dungeon suppliers.
Xie Jin's one and only dream was to be a dungeon supplier and when his only relative passed away, the relative's inheritance gave him a plot of land and surprisingly, a 'System' Module which the relative had previously used.
With the help of the system, Xie Jin decided to pursue his dream of becoming the number one dungeon supplier.