Madan came out all guns blazing to put paid to the hopes of Ashmeet 3-0 at the Megapool Snooker Academy in Dwarka.
Madan, the national number two, constructed breaks of 100, 49 and 68 to reign supreme on the green baize.
Bhandaal, who also won the Junior Billiards and Snooker titles along with sub-junior snooker at the recently concluded National Billiards & Snooker Championships in Gwalior, played out of her skin to match the pace of her opponent but Retra edged past in the final frame to seal the issue in his favour.
In the fifth and the decider, Retra showed fine potting skills and pulled the frame demonstrating brilliant game.
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In the other matches of the day, Delhi's star player, Anuj Uppal did not give his opponent from Uttar Pradesh much chance to visit the table as he scored a comfortable 3-0 win over Akash Srivastava.
Shivam Vats, the youngest player in the championship, impressed the crowd with his grit and determination but lost to Maharashtra's Rohan Sahalkar 1-3.