Toaru Majutsu no Index - Volume 1, Chapter 2: The Illusionist Bestows Demise. The_7th-Egde.

When an S-class elite assassin-raised captain of a special ops suicide squad comes home from a high-stakes Africa mission, he finds himself offered something that could potentially set him up for life- a curious assignment that he could use to finally exit his days of war and slaughter.

Then placed into a high-school setting, Lin Yi is tasked by the chairman of a top-tier multi-billion company with bodyguard duty for non-other than his own daughter, a certain little Miss of said high-school.

His enemies, once ranging from drug lords, mafia bosses, political figures, and national leaders, are soon replaced with spoiled kids who happen to have rich papas and mamas, and Lin Yi finds his intense expertise and high-threat skillset misused, and very underwhelmed…

But he does get a harem cast as diverse as his old enemies, so Lin Yi decides that, for the sake of messing around with girls as an invincible entity in a down-leveled environment, leaving his bloody and death-filled war days behind is something he’d definitely want to strive for.

- Description from Novelupdates

Ichiro was a man who had to live through a tragic and awful life.After losing his wife, his only source of happiness, his despair only got worse until the day he died.To Ichiro's fortune, the Goddess of Life, Phelena, decided to send his soul into a new body in another world. His only condition was for the Goddess to send him far away from people.The goddess agreed, but she certainly had other plans for Ichiro's new life.A wholesome story about a man rekindling his love for living and encountering his lost wife in another world![Story is written in 1st person with a casual tone]

The Soaring Dragon Continent is a world of summons, you can only become strong if you become a summoner! Yue Yang, an average high school boy, was suddenly transported into this world. When he woke up, he was greeted with a lot of worried faces and found out that he had assumed another person’s identity. Turns out he’s the good-for-nothing third son of the Yue Family, who had just recently drowned himself because of a failed engagement. Unlike the third son of the Yue Family who was useless in summoning, Yue Yang succeeded in making a contract with a summoning grimoire on his first try, even when the other guy failed for the past fifteen years. Others would have a headache making contracts with beasts afterwards, but countless beasts tried to gain favour with Yue Yang instead, acting like a good kid before him.

Jiang Li takes a meal and gains the status [Satiety].

[Satiety: Restores 1 Stamina per minute. Duration: ∞]

He no longer has to eat.

He sticks a talisman on himself and gains the status [Armored Horse Divine Travel].

[Armored Horse Divine Travel: Increase movement speed by 1000%. Duration: ∞]

Taking pills, gaining spiritual qi, refining the body, nurturing the soul, and increasing life expectancy…

He only needs one pill for the status to take effect for the rest of his life.

Those crippling secret techniques that boost power for three seconds but result in three-year feebleness? They are now the most powerful and most amazing techniques!

Waiting for a thousand years to comprehend the Dao after using one enlightenment pill? No, he is comprehending the Dao every day!

He is Jiang Li, a Prince Charming who can turn an instant into eternity →_→…