Everyday Life Letting Loose in the Kuchiki Family

Question: In a prominent family, with a capable eldest sibling above you and an adorable third sibling below you, how does the second sibling feel?

Xi Mu Yuji: Thanks for asking. I'm from a wealthy family, with a calm, reliable, rigorous, and capable eldest brother above me, and a clever younger sister with a tragic past below me. As the second child in the family, I... am having the time of my life, hahaha!

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In his previous life, Xi Mu Yuji was the eldest child of a great family, with a host of younger siblings. He bore the weight of the family's responsibilities, lived as the child everyone else's parents wished they had, and grew up to become the perfect man in everyone's eyes.

But nobody knew how much he suffered. He had no happy childhood. While other children caught cats and dogs, he studied math, physics, and chemistry. While they went fishing, played cards, and raced birds, he worked on academic papers, prepared for graduate school, and studied stocks.

Though everyone envied him, he envied everyone else.

Then, just before his thirtieth birthday, he was in an aviation accident. When he opened his eyes again, he had caught up with the times and transmigrated!

In this life, with a remarkable elder brother and no responsibility or duty to shoulder, Xi Mu Yuji can finally let loose!

* There will be plenty of original worldbuilding.

* Apart from the canon couples, there will be no other pairings, especially not for the protagonist. Everyone is just good friends!

Theme: Seize the destiny that belongs to you!