Toaru Majutsu no Index SS - Volume 2, Chapter 7: Someone Behind the Scenes is Unprepared and has to Clean Up. The Second Friday of May.

Traveling through the fantasy world, becoming the descendant of the immortal family in the fairyland, born with a Chaos Physique, accompanied by a piece of Immortal Bone and a Primordial Seal.Starting with the Chaos Physique, he pushed forward all the way to be invincible.There are thousands of geniuses in the world, and they all have to bow their heads when they see me.

【Mr. Lin Wife's Love Story】“Boss, in one minute, your wife has scratched a limited edition sports car while driving.” “What, has the wife been hurt?” “No.” “That's good, you can directly charge the expenses of the car to my account. In future, you will handle similar situations in the same way, as long as my wife isn't hurt herself.” Secretary: Boss, do you have any principles left?【Mr. Lin's Marriage Trick】“Nannan, as long as you marry me, you can still do what you like, go where you want, and I will handle all the house chores.” “Hm, sounds pretty good.”【Post-Marriage Complaints】After marrying, An Nan found that a certain man secretly sabotaged her work, reducing it by half, and whenever she wanted to go somewhere, that man conveniently had free time, thus killing her plans for romance in its cradle. Damn, with things like this, why did she even get married: “Lin Mubai, I want a divorce.”(This story doesn't involve any third or fourth parties, even if one or two pop-up sometimes, they are just cannon fodder)

This is a story about a legend, of one that can never be forgotten.
Summer, first time down the mountains in 16 years, after being raised by his 3 masters and Fairy sister.

‘Why won’t you follow the Rules of society?’ The rules are the tool made by the strong, so I follow my own rules.

‘Why won’t you just use your brain instead of your brawn?’ Idiot! Have you ever seen anyone use their brain, to get back at an ant that bites them!? No, they just casually step on it.

‘Oh, everyone says you’re a first-class beauty huh?’ well, I’m sorry but even you are not qualified to be my wife. Only a ‘Summer class beauty’ is worthy enough!

‘My enemy is sick?’ Oh, don’t worry, even if you’re on your last breath and I feel it’s beneath me to slap shot you dead. I’ll just fix you up and then beat you!

‘Who am I?’

“I am Summer in the spring, the autumn, and the winter, I’m the world’s first above the heavens!”

Follow me, Summer Day as I step by step become known as the world’s first master, the world’s first doctor, the world’s richest man…… a lot of other world’s number one, but most importantly, The worlds happiest man.

- Description from Novelupdates