MTL - Supreme Demon - Chapter 3420 You are crazy!

An Individual from Earth finds themselves in the Shinobi World, equipped with a Scientific System. From that moment, he delved into scientific research far ahead of its time.

After Reincarnating into Naruto World at the Warring State Era as an Uzumaki, Masahiko thought that he got a useless System. He lived for 48 years as a normal, below average Uzumaki Shinobi.

That changed when he finally knew how the system works the day of his 49th Birthday!

- Description from Novelupdates

Raphael loves women in relationships.It's always been a problem of his. He just can't help it.And now that he's been accepted into the Magical Five Schools, a place filled with some of the most beautiful women he has ever seen, he's able to live out his fantasy to even greater lengths.But his addiction puts him in difficult situations. Some so serious that even his life is put at risk.How will he navigate this new environment, whilst living his life to his most lustful desires?With the help of his unique powers and being granted the S-Rank, Raphael Brooks' will surely live an adventurous life in the Nation of Vailstone.

In a world of wizards and witches, Jaegar undergoes reincarnation and enters a mysterious realm. Driven by a desire for pleasure, he embarks on a journey of self-discovery, encountering challenges and uncovering secrets along the way. As he explores the magical arts, Jaegar's pursuit of pleasure shapes his choices and drives him forward, leading to both fulfilment and consequences. This is a story of a young man's quest for pleasure in a new and enchanting world of wizards and magic.