Using your Black Sun Rider Custom Set is easy. First, start with Set A. You can replace the original head of your Black Rider Figure with the Luminous Head. Just make sure the magnets are properly aligned so the LEDs can light up. Then, swap the driver part with the Luminous Waist. For the King Stone Custom Part and Short Neck Joint, simply attach them as you would normal figure parts. If you have Set B, add the replacement shoulder armor parts, and attach the Punch and Kick Effect parts along with the Kick effect joint. When it comes to the LED head, you'll need to insert a CR927 battery (which isn't included in the set). As for maintenance, keep your set away from water and extreme temperatures. If any parts get dirty, you can gently wipe them with a soft cloth. And always handle the parts carefully to avoid breakage.