Seishiki ni Majo ni Natta Nidome no Akuyaku Oujo wa, Mou Futatabi to Taisetsu na Mono wo Ushinawanai to Kokoro ni Chikau @comic

Princess Alice, a young royal with distinctive crimson hair, finds herself mysteriously transformed into her 10-year-old self through unknown magical circumstances. In this new form, she encounters Theodore, a solitary knight known as a heretic (Nox) who bears the stigma of being the most shunned member of the Knights' Order. Despite his reputation, he becomes the one person who can understand her unique situation and the isolation that comes with being different. As their paths intertwine, Alice must navigate the complexities of royal life while concealing her true identity, and Theodore faces the challenge of protecting someone who shouldn't exist in her current state. Their unusual partnership begins when Alice makes an unexpected proposition that will change both their lives forever. A tale of two outcasts - a princess trapped in a child's body and a knight burdened by his past - whose shared crimson connection might be the key to overcoming their individual struggles in a world that has rejected them both.