Legendary FBI Detective - Chapter 747 - 749: Harvest

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

Having been reborn in the high school graduation season of 2008, Li Yuan found himself back at the moment when he confessed to the school beauty...Bai Weixi: “Thank you, being liked by you is an honor for me, but I don't want to be in a relationship right now.”Li Yuan promptly took back the gift he had presented: “Then give me back the gift I gave you.”Bai Weixi, with her beautiful eyes wide, looked at him in disbelief: “Li Yuan, what do you mean?”“You've already rejected me, yet you still want to keep my gift?”“But we are good friends!”“Heh, like I'm short of good friends? What I'm short of is a girlfriend, you get it?”Watching Bai Weixi, disheveled in the wind, Li Yuan turned to ask: “By the way, could you give me your best friend's phone number?”Bai Weixi fumed with anger: “Li Yuan, what are you trying to do?”Li Yuan just shrugged nonchalantly: “Nothing much, she's prettier than you, I've decided to pursue her instead.”

This novel is about the young master of the Du clan, Du Shaofu, who was born with crippled veins and is unable to cultivate martial arts . After finding out about his situation from the clan while returning home he got hit by a lightning and a mysterious ‘first scripture’ appears and after studying for ten years he was able to mend his crippled veins together and starts his journey to glory.

- Description from Novelupdates

A series of short stories in the world of Toaru Majutsu no Index organized into chapters featuring Kanzaki Kaori as the protagonist, going around the world and space doing missions for the Church of Necessary Evil, however, there is more than meets the eye as each incident is connected.

One chapter was bundled with each limited edition release of the Toaru Kagaku no Railgun anime DVD and BDs, with all of them together being equivalent to a single normal Toaru Majutsu no Index volume