『Matched with an Out-of-Control Sentinel』
You have been matched by the Matching Center with an out-of-control Sentinel who is about to be euthanized. Qi Xingchen is an S+-class Sentinel born in a laboratory. His mental body is a giant starry sky octopus. Though extremely powerful, he is also highly prone to losing control. Having never matched with a suitable Guide, he has been imprisoned in a quiet room at the bottom of the Tower for years to prevent him from hurting others, and is only released to resolve massive threats that cannot be handled otherwise. After long-term observation of his condition, the superiors of the White Tower completely deemed him an uncontrollable, incurable, and futureless ultimate high-risk weapon. Combining his years of extreme mental agony, the hopeless situation with no savior, and the fatal risk of going berserk at any moment, the high-level officials finally handed down the final verdict: execute euthanasia on Qi Xingchen to completely end his suffering and root out the world's greatest safety hazard. However, right before the execution, he reached a 100% compatibility match with you.