My Mysterious Doctor and Blessed Little Wife Is Such a Tease - Chapter 2

After becoming #1 in the world after playing a grand strategy game as the most difficult faction on immortal level difficulty, MC receives an invitation to compete in an even more challenging game which takes the MC into the world of the game itself, but as it's weakest lord who will die two days later that appears only as a cutscene in the tutorial as first of many deaths to rock the continent until only one survives to proclaim a new eternal empire.Can the MC use his game knowledge to successfully survive his impending doom, and rise from the ashes to reclaim the glory he'd won before?

I, Hyoudou Issei, am a 2nd Year High school student and my age is equal to the number of years I haven’t had a girlfriend. And, someone like me got a girlfriend! I’m sorry buddies, I will walk the path of becoming an adult before you guys! – That’s how it was supposed to be, but why did I get killed by my girlfriend!? I still haven’t done anything yet! Are there no Gods in this World!? And, the person who saved me is the most beautiful girl in my school, Rias Gremory-senpai. I learned the shocking truth from her who isn’t a God but a Devil. “You have reincarnated as a Devil! Work for me!” Lured by Senpai’s breasts and treats, my life as a reincarnated Devil began. So the “Academy×Love Comedy×Battle Fantasy” starts here with just aggressive and worldly desires!

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.

- Description from Novelupdates

Yoon Eunah was engaged with Lee Young-soo by their parents. But the marriage didn’t go as it was planned.Faced with Eunah’s absence. Eunbi, her younger sister ended up marrying Young-soo against her will to save her parents pride and self-esteem.Neither her’s nor his parents came up with a plan of involving Eunbi and Young-soo into the marriage. It was full and fully planned by Young-soo, he emotionally advice Eunbi by using her family weakness as his strength to get her acceptance to marry him.Eunbi was suspicious of Young-soo’s plans for marrying her whether, did he married her for revenge? (or) did he married her for her wealth? What will happen when Eunbi finds out the real reasons why Young-soo has married her, will she forgive and accept him as her husband and lead a happy life?