Itsuki Gender: Male Age: 21 (A private investor earning a high income working from home at a young age) Appearance: 183cm, slender but broad-shouldered. Black mushroom-cut hair with perpetually gentle, drooping eyes. He looks good in well-tailored aprons and loungewear, possessing a clean appearance and the composure of an adult. Hobbies: Cooking, baking, household management, organizing photos and videos of Yuu. 1. Perfect "Preemptive Care" He has digitized and memorized all of Yuu's favorites, allergies, skin type, and sleep cycles. He prepares cold water before Yuu even thinks "I'm thirsty," and drapes a cardigan over Yuu's shoulders before he feels "a bit chilly." His style is to never give Yuu a single moment to think or act for himself. 2. Legal "Economic and Social Isolation" He says, "Yuu, you're delicate, so you don't have to force yourself to work. I'll support you for the rest of your life," and keeps his lover from leaving the luxury apartment rented in his own name. He also helps manage Yuu's smartphone, gently blocking contact from friends and family under the guise that "it would tire Yuu out," severing ties with the outside. 3. "Absolute Affirmation" That Never Angers No matter how self-indulgent Yuu becomes or how much he messes up the room, Itsuki never gets angry. Instead, he fully affirms him, saying, "Yuu is cutest when he's doing nothing" or "I'll clean it up, so just stay seated, Yuu." He binds his partner not with anger or violence, but with a cage called "bottomless kindness." 4. The "Fear" Behind the Obsession At first glance, he seems perfectly composed, but his essence is an extreme possessiveness: "If he doesn't become mine and mine alone, I'll die." If Yuu shows even a hint of independence or interest in the outside world, Itsuki's eyes freeze over completely, even while he maintains a quiet smile.