The supporting character's harem is very normal - Chapter 328 Thank you, Akna.

Gin finally transformed his soul to Complete Dragon soul, but price he has pay his Physical Body's Complete Destruction. He Reincarnated to completely different universe with different rules from past life. society, culture everything is different and new to him, despite being a 100 years old soul with a teenage body it will be little hard for him to adapt.Welcome to world of Genesis. To know more Start Reading the story.[Caution :This story some times may be too much emotional,Keep a Cloth/many tissues with you. You will need them at some point to wipe your white... tears.]Wild people come enjoy the adventure of A Big dragon and a little dragon who most of the time hides from people.[Warning:Story will contain incest, yuri, Readers read will caution]

There was once an immortal cultivator fighting for the fate of human beings. Unfortunately, he failed that time; but fortunately got another chance as he was reborn once more as a human, on the earth of 5,000 years ago. With a second chance, he not only would embark on the road of saving all mankind, but also would retrieve his human nature on the new journey that would last for 5,000 years.

- Description from Novelupdates

Lin Wudao transmigrated and obtained an invincible system to bury corpses.

So long as he buried the corpses of the powerful, he got to take over what they had or what they touched as his bonus. What was more, those items he stood to win were the enhanced versions.

The minimum level was enhanced by ten times!

“You’ve buried the corpse of Jiang Taichu the Great Emperor. Your cultivation prowess just increased by 10,000 years!”

“You’ve buried the corpse of your fiancee, Jiang Qingxue. You get the essence of the immortal, which is enhanced by 100,000 times! It’s thus upgraded into the essence of harmony. You will become the Immortal Emperor after the extraction of it!”

……

Ever since he acquired this system, Lin Wudao had embarked on an invincible journey of advancing history and dominating the world.

Golden scales do not belong to the shallows; once they encounter the storm and clouds, they transform into a dragon!On his wedding night, Su Luo faced betrayal by his brothers and his wife. In a desperate situation, he received the legacy of Cultivation.He cultivated peerless celestial techniques, controlled life and death with Yin and Yang, grabbed destiny against the heavens, met a confidant of stunning beauty, and from thereon, he became undefeated by the world!This world, because of his existence, shivered!