The Scorned Lady Chooses the Path of an Alchemist in Her Second Life: First Steps of an Apprentice Alchemist

Also known as: Sagesumareta Reijou wa, Daini no Jinsei de Akogare no Renkinjutsushi no Michi wo Erabu ~Yume wo Kanaeta Minarai Renkinjutsushi no Dai Ippo~, 蔑まれた令嬢は、第二の人生で憧れの錬金術師の道を選ぶ～夢を叶えた見習い錬金術師の第一歩～

by Aroe, Akano Amamichi

Meer, who works at the guild reception desk, witnesses her fiancé cheating on her just before retiring. After breaking off her engagement, she receives an unexpected offer to become the "court alchemist's assistant"!? Source: Kadokawa, translated