One Piece: Dream of Immortality - Chapter 539: Refreshing Lemonade

Before death Qin Tailong left two magic tools to his son, Qin Dong. In his father’s last words, Qin Dong realized his father had been murdered by Lord Wanpeng, who coveted one of the family magic tools—mystic chaos ring. Bearing the hatred in mind, Qin Dong swore to revenge against his foe. He escaped to the mortal realm temporarily, continued to strengthen his cultivation base and studied the secret hidden in the seals of the ring. While reveling the secret, he found five ladies were the key to the release the seals. Their romantic relationship with Qin Dong was established the moment he was born.

- Description from Novelupdates

'S-Rank Adventurer & Reincarnated Otherworlder' Sebastian is thrust into the role of ‘Head Butler’ for a mysterious upstart noble in the kingdom’s most dangerous, ungoverned region—The Garden of Hell, where powerful beasts roam and rule the land...!What he doesn’t expect is that the young noble he’s assigned to serve... is none other than the villainess from an Otome Game in his previous life!But this villainess is far from the arrogant, malicious figure he remembers...Having lost her engagement to the crown prince and fallen into disgrace, she’s now tasked with creating and managing this dangerous territory in the Kingdom of Florentia.Now... Sebastian must help this fallen villainess regain her honor while serving as her head butler—all while working to transform this perilous region into a prosperous one!TAGS AND GENRE:Romance | Comedy | Fantasy | Slice of Life | Kingdom Building | Action | Reincarnation | Villain | Villainess | Otome Game | Royal Family | Drama

One day, a tower appeared in the skies of all the major cities…

An ordinary student, a wretched peeper, a cowardly teenager with a kind heart. In a terrorist attack, he inherited the knowledge of countless elites, embarked on a path of God Jagged Tu…

He is an artist!

He is a mathematician!

He is a psychology Doctor!

He is a master of fighting!

In fact, he is a man

Taken off raw site:

A wretched, dirty young man is working during the summer when he was caught up in a mysterious explosion. After that explosion, the young man is then left with the memories and knowledge of dozens of the world’s experts.

He has changed, his heart has become cold, iron-blooded. He became a killing machine, his mind turned mechanical, calculative. Everything goes according to his plans and calculations!

In this magical, slaughterous world, a door is opened for him…

- Description from Novelupdates