Manga Like Jiogui Silvertown

In the middle of the South Pacific, on a remote island, there is an impregnable nursing home from which no elderly person can escape. 73-year-old Noh Gu-Sik, who is preparing for the end of his life after losing his wife, is greeted by the elderly people as soon as he enters the home. In an unfamiliar environment, Noh Gu-Sik becomes the subject of conversation by displaying his characteristic forcefulness instead of his characteristic adaptability, and at the same time, he meets and develops feelings for Mrs. Kang, who looks exactly like his wife. However, in the meantime, he becomes the target of the dark force that rules the nursing home, the 'Long-lived Elderly Association', and Noh Gu-Sik engages in a fierce battle with the seniors' association executives and develops his love for Mrs. Kang. Having found hope in life again, Noh Gu-Sik tries to escape the nursing home with Mrs. Kang and start a new life, but Jo Bang-Cheol, the chairman of the seniors' association and the hidden director of the nursing home, interferes. How will Noh Gu-Sik survive in the face of an unstoppable, enormous power? (Source: KakaoPage, translated)