After Being Killed by My Twin Sister, I'm Going All In on My First Love in My Second Life!

Diana, who was murdered by her twin sister, finds herself transported back in time to the morning of her graduation ceremony. She begins to fight to save Alan, her first love, who lost his life in her previous life. The romance fantasy about a young lady who met a tragic end and gets a second chance at life, featuring a significant age gap, begins.

(Source: Bushiroad, translated)