Gravity Mage with Level-Up System - Chapter 786 Open challenge!

Alex used to be a scientist in his previous life, infamous for doing questionable biological research; now he's the prince of a nation and a chosen 'Saint' of the God of Wisdom.Despite being a 'saint,' he's a top-tier schemer and a conspiracy master who considers his goals and ambitions above everyone and everything else in the world.“Power, connections, intelligence, and money... That's all that matters in this world; those who have them are supreme!” - Alex 'The All-Knowing Saint'What will happen if such a villainous person is thrown into this new world as a supposedly benevolent and kind 'saint'? Let's find out...(NO-HAREM, SCHEMER MC, TACTICS, AND STRATEGY!)

After the hard struggle of a post-80s Shen Feiyang, he met with a tragic car accident in his fifties. When he again opened his eyes, he did not see the white walls of a hospital, nor had he arrived at the netherworld. Instead, he had transmigrated into the body of the post-50s young girl, Shen Yunfang.He had transmigrated into an era where people could not get enough to eat or sufficient clothes to wear.Humph, such hardships could not defeat a wise woman who had battled through society for half her life. Watch as she, with a chicken in her left hand and a duck in her right, carries a chubby baby on her back and sings triumphantly along the way.

Once through the pirates, Lu En became the son of Monkey d Dragon, a grandfather named Monkey d Karp, and an unreliable and neurotic younger brother named Luffy.

Fortunately, the ghost back system is activated!

The completion of the ghost back is 10%, and the training effect is increased by 100 times!

The completion of the ghost back is 20%, and the training effect is increased by 1000 times!

…

One day, Lu En, a ghost-backed master, appeared in front of Luffy who was shouting to go to sea, and made Luffy cry on the spot.

Luffy: “The pirates in the sea are all monsters like my brother? I don’t want to go out to sea!”

Garp: “For a long time, the two boys, Long and Luffy, with small arms and calves, I really doubt that they are not my sons and grandsons. Like Lu En, they are the grandsons of the old man!”

Warring States: “The strongest creature in the sea, land and air is Kaido? No, it’s Lu En!”

- Description from novelbuddy

Logan ends up in a world of familiars, where everyone can make a contract with a familiar to get super power and grow stronger.The first familiar Logan summons is a legendary angel, and it draws a lot of shock and envy.But fate messes with him, because right when Logan is about to make a contract with the angel, the angel looks down on his plain background.“Someone as noble as me—how can I be driven by a low-born bloodline?”After that, she goes over to the noble-born school beauty, leaving the whole crowd full of sneers.Right then, Logan awakens a system, and he can see all a familiar's hidden info and evolve their bloodlines, talents, and skills without limit.“Since it won't listen, I'll switch it out, the next one will be more obedient!”With everyone laughing at him, he just made a contract with a low-level succubus.“A low-level succubus? Once this kind of familiar gets off the bed, its fighting power isn't even as good as a hyena!”“A loser with a succubus—this kid will never have to worry about women anymore, haha!”...Many years later.When demon fire lights up the stars and blood-red wings cover the sky, people finally realize—standing behind Logan are all those ancient, scary beings from myths and legends.