This is an interactive experience about "gentle companionship and parting goodbye. Taking the desktop robot silently (Momo) as the carrier, through 30 days of gradual emotional design and behavior changes, it simulates a journey from unfamiliar, familiar to leaving. The relationship between users and robots is no longer just a "use relationship", but a light "emotional relationship" with emotional rhythm, detailed feedback and narrative sense ". The whole piece of company is like a mini-drama, with small changes every day, gradual rhythm, and finally landing in a "restrained and gentle" farewell moment.