Tang San's Twin Sister - Chapter 131

Check in in front of Shicun Liushen, and get the reward Innate Saint Dao Embryo.

Check in in the False God Realm, and get a bonus cross-border amulet, which can be used to randomly enter other worlds.

Check in at Tianshen Academy, get rewarded with the secret of writing, the speed breaks through the limit of the world, and evolves time.

Check in in Xianyu, and get rewards.

After entering the perfect world, Shi Zhong got the check-in system and became a member of Shi Village.

Since then, the Eight Realms of the Lower Realm, the Three Thousand Dao States, the Nine Heavens and Ten Lands, the Immortal Realm and the Sea of ​​Heaven, etc., have all left footprints of stone bells.

- Description from novelbuddy

After 2000 years has passed, the ruthless demon lord has just been reincarnated! But his aptitude at an academy for nurturing candidates for demon lords is, “Inept”!?

Having the capability to destroy humans, elementals, and gods, after a long period of countless wars and strife, Arnos the demon lord became sick and tired of all that and longed for a peaceful world, so he decided to reincarnate to the future.

However, what awaited him after his reincarnation is a world too used to peace that his descendants became too weak due to a huge weakening in magical powers.

Arnos enrolled in the Maou Academy established to find any students that might be the demon lord’s reincarnation, but his powers are too extraordinary that those in the academy couldn’t properly judge his powers, so he’s regarded as an “Inept student”. Being underestimated and avoided by most people there, he recruited a girl friendly to him, Misha, as his subordinate and comrade, and strives to climb to the top of the demon race hierarchy to one day reclaim his former title and status.

Qiao Xia, as TVE’s new entertainment reporter, had a good timing. She accidentally filmed her female cousin and her own fiancee’s scandal. And after one misfortune, a second misfortune got added ! When fighting helplessly alone, Qiao Xia, the pure and innocent little white rabbit, suddenly met the charming and arrogant male god – TVE’s crown prince Mu Liang.

Male God: Marry me.

Male God: I have a house, a car, a good looks, and also an unparalleled IQ. Where will you find such a good man?

Male god: My IQ is 130. Marry me, and you will never be defeated !

Qiao Xia: …So I’m afraid that means you’re not a fool ?

But when she fell in love with the male god and wanted to spend the rest of her life with him, the male god retracted…

Anrgy Qiao Xia : What kind of male god are you, you simply are a scumbag!

Male God: Alright, since you want to get married, I will be a bit unfair to you and marry you.

What Qiao Xia didn’t know was that the male god had kept her in his heart for more than ten years.

“I am your cloud, on which you can stand for the rest of your life, with which do whatever you want, on which you can watch the world’s scenery. Even if you fall, it will fall on me. I will stay with you even in danger.”

- Description from Novelupdates

Our protagonist Caam is a man from Earth that was reincarnated into this world as a demon. In order to survive, he spared no effort in avoiding the sparks of battle and without noticing it, he became strong himself.