During a perilous and chaotic incident, he stumbled upon a man who was tightly bound from head to toe. The person he impulsively saved was… wait? Rather than exhibiting fear or distress, he maintained a composed demeanor and exhibited an oddly suspicious attitude. "What’s up with this guy…?" This individual, who radiates an unmistakably menacing vibe… is supposedly in a relationship with his older sister? And now he desires for them to cohabitate?! "…Absolutely not!!