Busan's good things have always depended on one person. A festival, a space, a community — when the one devoted person left, it vanished with them. The promises repeated over twenty-six years are the proof. This essay is the 17th in Busanloop's "18 Questions for Next Busan" series. Continuity does not come from one devoted person. It comes from institution. An institution is a vessel that holds promises. As open source proves, even with the vessel (the technology) in place, what fills it is culture; only when the next person can take over after one leaves does it begin to accumulate. Even in an age when AI carries memory and connection, keeping a promise remains the work of people. Series vocabulary chain: trust (Q9) → recognition (Q10) → infrastructure (Q11) → misalignment (Q12) → discovery (Q13) → will (Q14) → gathering (Q15) → points abroad (Q16) → continuity (Q17). The next essay asks: what is the next Busan?