Kino Shita Mahou Koumuten – Isekai Kouhou de Saikyou no Ie Zukuri wo
Description
A high school student, Takeru Kinoshita, was summoned to another world alongside his classmates. While his peers were hailed as heroes or sages, Takeru was assigned the job of… a construction contractor?! Lacking any combat skills, he was put in charge of a castle in a remote land called Gaurea! However, the fortress of Gaurea suffered from unsanitary conditions unimaginable in modern Japan… “Maybe I can fix this using this power!” Unable to bear it any longer, Takeru uses his “Contractor” ability to renovate the fortress in a modern style!