Katte ni Yuusha Party no Anbu wo Ninatte Itakedo Fuyouda to Tsuihou Sareta no de, Hontouni Fuyou Datta no Kamikiwamemasu

Hidden, a scout, joins the hero's party to defeat the Demon King. However, the party members, led by the hero Ashram, are unaware of the real-world problems they face, such as financial management, spies from the Demon King's kingdom, and assassins from rebel forces. Hidden decides to take on dirty work behind the scenes to support the party, but is expelled by the heroes, who are unaware of his contributions... With nowhere to go, Hidden heads off to join a dark guild.