Third Base Mission House is a Christian residential community where the Gospel is not only spoken but embodied in daily life. About fifty members live, worship, and share meals together within a building that interweaves collective and private realms across five floors. The ground level accommodates parking and a multipurpose hall, while the second floor forms the communal heart with worship, prayer, and dining spaces that nurture shared rhythms of life. Above, dormitory-style rooms house residents in small groups. Multiple courtyards punctuate the building, some connecting vertically through skip-floor staircases, others remaining isolated to individual floors. The central bamboo courtyard anchors this network of voids. Semi-outdoor decks between rooms create transitional zones that blur interior and exterior boundaries, fostering spontaneous encounters and quiet reflection. Curved concrete panels envelop the façade, their continuous flowing surface expressing the intertwined relationships of community life, uniting structure, form, and spirit into a single architectural gesture.