The Mental Hospital Cures Minds, the Doctor Feeds Me Mouthfuls

[Wood-Type Alien + No Romance + Lighthearted Comedy + Slight Brainwashing + Ensemble Cast] The alien princess Sensen crash-lands on Blue Star. Hiding her identity, she treats every Blue Star creature around her as a research specimen. But while testing passersby in a busy district, she gets mistaken for a pervert and hauled off to a psychiatric hospital. … Another person who ends up there is Shen Jibai, a disgraced young master who has pretended to be insane for eight years. Shen Jibai: “What did you get brought in for?” Sensen: “Eating mouths!” Shen Jibai: Is this Second Uncle's honey trap? Sensen grabs him and kisses him. Shen Jibai: ???!!! System: The mouths of Blue Star males are rich in nutrients. It is recommended that all our people eat more mouths! … The garden. Sensen talks to the flowers and plants. Passing Security Guard A: “Poor thing. She's so far gone!” Security Guard B: “And the director gives her a hard time, making her live in a leaky shack.” But Sensen cries out, “Does everyone understand?” All the plants: “Yes, Princess!” With this ability, Sensen becomes the head of the hospital kitchen, an expert on medicinal herbs, and more... Two people, two identities, each thinking the other is crazy. Until, drunk, she confesses: “Actually, I'm an alien.” He replies, “What a coincidence. I'm from Blue Star.” He doesn't know that this is the truth. He knows even less that he is only three weeks away from inheriting the family fortune, and that his Second Uncle has bribed the director to remove his frontal lobe. … Absurd survival, scheming bigwigs, everyone jumping to conclusions, stand-ins, pretending, impersonation, punishing scumbags, hidden powerhouses, lighthearted comedy, wealthy-family revenge, psychiatric hospital, asylum, aliens, counterattacks, comebacks, turning the tables, mutual salvation, saving each other, hiding one's identity, infiltration