Isekai story Ts fantasy in the world of death March Kara Isekai

Rei, a former samurai lieutenant is reincarnated into the body of an 8 year old, who happens to be the main villainess in a romance novel for foreign girls. A villainess destined to be executed by her fiancé the crown prince for cruelty towards the heroine of the novel. To avoid being executed she must to make allies among her enemies, get out of the heroine's way, and untangle herself from the poisonous intrigue of court the best she can in the role of a future courtier. However, the vaguely described backdrop said nothing about the conflicts building beyond the heroine's understanding, or that women weren't allowed on the battlefield. I am honestly left speechless. I am very touched and honored by all the attention, by all the sweet, beautiful and fun comments I've received over the last month, it's been truly amazing. To those who already enjoy it, I hope you will continue to do so. To those who decide to pick it up, I hope you have as much fun with it as I did!

Tale of a Man who was reincarnated into another world as the son of a Saint but his birth was hated by everyone and he was forced to get a class that was seen as an unwanted class, Alchemist. Using his previous world's memories and his wisdom, he was struggling to survive and gained a stable life. Disclaimer: I don't have the picture on the cover