My Punishment Is to Be Sincere!

My short life as a human came to an end, and I found myself standing before the seat of judgment. The sentence for my sins was simple: in my next life, I must prove my sincerity. But the life awaiting me is not that of a human—it is that of a dragon, blessed with near-limitless vitality and time. With eternity ahead of me, can I truly learn to live with all my heart?