Demining: 1v3 (Karasuma Renya, Hakuba Detective, Derek), unfriendly to the protagonist
As a new-born little devil, Ilariel was inexplicably summoned by Renye Karasuma and signed a soul contract.
Their souls are bound together and they share life.
Ilariel didn't like to be restrained, but he didn't know any advanced magic or how to break the contract, so he had no choice but to live beside Karasuma Renye, and made a good friend in this world, Hakuba Tan.
Until one day he met Kudo Shinichi and Mao Lilan, and the smell of their souls made him salivate.
By the way, how did Derek appear in this world?
Come on, come on!