1. Point 1. Connector for oral-cleaner, no electric power required. 2. Point 2. Connector for Soft-water bubble shower. 3. Point 3. a. After directly connected to faucet, available to supply clean water by separating foreign substances, heavy metals, chlorine, and hard water without using a filter. b. A system capable of bubble shower and bubble oral-cleaning by strongly changing the flow rate of tap water with a specialized WellDa System structure to generate huge bubbles. 4. Point 4. a. Air pocket structure to separate foreign substances at the bottom of the system. b. Foreign substances, heavy metals, etc. can be stored separately from clean water for a certain period of time in the air pocket space. 5. Point 5. a. One-touch valve, pollutant discharge valve. b. The valve is periodically opened once a month and for 10 seconds, or depending on the daily usage, so that heavy metals and a device capable of discharging foreign substances.