I Was the Palace Locksmith, but I Was Banished After Hiding My PowersNewKyuutei Kagishi, (Time Stop - Lock) to (Bunshibunkai - Release) no Noryoku wo Kakushiteitara Tsuihousareru • 宮廷鍵師、【時間停止(ロック)】と【分子分解(リリース)】の能力を隠していたら追放される～封印していた魔王が暴れ出したみたいだけど、S級冒険者とダンジョン制覇するのでもう遅いです～

The Royal Locksmith Yuri is framed for embezzlement and expelled from the Imperial Palace without being able to take over the mission of sealing the Demon King. The one who reached out to him was the S-Rank Adventurer, Astoria! Astoria had noticed Yuri's ability, who had acquired out-of-spec "Key Magic" through the Demon King sealing!?