Fuguu Ouji wa Tensai Renkinjutsushi不遇皇子は天才錬金術師@COMIC; 不遇皇子は天才錬金術師～皇帝なんて柄じゃないので弟妹を可愛がりたい～@COMIC; Fuguu Ouji wa Tensai Renkinjutsushi: Koutei Nante Gara Janai no de Teimai wo Kawaigaritai; Fuguu Ouji wa Tensai Renkinjutsushi: Koutei Nante Gara Janai no de Teimai o Kawaigaritai; The Useless Prince Turned out to Be a Genius Alchemist; The Unfortunate Prince Is a Genius Alchemist; The Useless Prince Turned out to Be a Genius Alchemist: Screw the Throne, I'm Just Here to Pamper My Adorable Siblings; The Unfortunate Prince Is a Genius Alchemist: Being Emperor Isn't My Thing, so I Want to Dote on My Younger Siblings

One day, a man obsessed with warm, loving families gets reincarnated into the magical Iscalion Empire... as Prince Asha, the unwanted eldest son. But he's too "tainted" by his bloodline to be an heir and is separated from his younger brothers since their birth. So, he gives up on attaining the throne, embraces freedom, and dives headfirst into alchemy as his personal playground. But with his overflowing talent (and memories of modern science), he ends up inventing world-shaking tech by accident?! Even nobles get smacked down by his "inventions" Before long, he's unintentionally dominating the imperial succession war. "All I ever wanted... was to be called 'Big Brother' someday." ___ * [Original Web Novel](https://ncode.syosetu.com/n1454hs/)