Twisted Wonderland: The Adventures of the Phantom General's Treasure

The last thing Yuri remembers was falling to his death, the sight of his general and dear friend watching on in shocked anguish with the heir's egg clutched to his chest screaming for Yuri. Yuri closes his eyes, accepting his fate. Knowing he was going to die once he reached the bottom.

Instead, he wakes up unfrozen in time and attending a school called Night Raven College, where he's set to meet old faces, new friends, and maybe even find a family.
There are also plenty of challenges, bullying, and overblot, but he can handle that.

Lilia Vanrouge has lost a lot during his long life. His best friends among them, and almost their son, the only part of them left to him. But it was that night 400 years ago that he lost most. He lost his last best friend, her heir was taken from him, he had left his military career, and he had lost a dear treasure who smiled accepting his death. Eventually, he finds more treasures, but he's never able to cleanse the wound left by the one before.

Then his treasure is returned to him and Lilia doesn't think he'll be able to handle all of the trouble that follows his treasure around. Or the constant collection of pretty boys his treasure has begun too unwittingly gather around him, leading to some difficulties with his own emotions that he hasn't struggled with in centuries.

They'll both have plenty of challenges ahead of them as they the trials ahead of them.