Khalida traveled to her parent's generation in fourth grade, where all the mysteries were explained. She knew the love story of her parents, saw the truth behind the deaths of the Potters, and the true face of Regulus, who was called a coward.
Returning to the descendant generation, she tried her best to prove that Regulus was not a Death Eater, and Regulus also tried his best to avenge her in the original generation...
(The preface is very long. It starts from the third grade, and briefly introduces it from Sirius. Friends who mind can skip the previous part and start reading directly from After Time Travel)
Intention: We still maintain the ability to love in different time and space