Foreword: Yes I am aware that King Piccolo was a Dragon Clan Namekian and that Piccolo Jr is a Warrior Clan Namekian, but this is fanfiction and this won't be the only thing I will be deviating from the norm with for the sake of a decent story. Note that I said "decent", not "great". I'm not gonna presume too much of my first fic.
At just one year old, Bansuri had grown into a stronger combatant than Goku was when Piccolo fought him at the World Tournament, a fact that made Piccolo proud and consider going after Goku immediately but ultimately deciding against it.
"Goku isn't the type to stay idle, odds are that he's also gotten stronger as well so going after him now would most likely end the same way as the last fight did. Not well for us" Piccolo explained
"...Perhaps when both of us are double the strength Goku had when the two of you last fought?" Bansuri suggested, making Piccolo consider the idea
"Hmm, at the very least. Let's guarantee victory by setting double as a benchmark then aiming above it" Piccolo decided, getting a nod of agreement from Bansuri.
Kami stood at the edge of the Lookout watching Piccolo interact with his son, a faint smile on his wrinkled face. While Piccolo and Bansuri's growth did concern Kami originally, the fact that Bansuri had no malice in his heart and the fact that Piccolo's own evil had started to ebb away put Kami's worries to rest.
"And you are sure that they will not be threats to the world?" Popo asked, still uncertain of the decision to let Piccolo and Bansuri do as they pleased
"Piccolo may think he still desires the world to be his, however what he truly desires has shifted. He desires to leave behind a legacy to be proud of and Bansuri is playing that role with aplomb, whether or not Piccolo will notice the change of his own heart is a different matter" Kami patiently enlightened his genie friend and lightly joked at his other half's expense.
Popo considered what he had been told and returned to gardening, leaving the Guardian of Earth to watch his other half and chuckle at the sheer pride Piccolo held for his son and the comedy of Bansuri's newest trick of using a portal to make Piccolo punch himself in the back of the head to lead into a kick.
Goku didn't need to be called for a father and son bonding, he had his own family to attend to. Interesting how both rivals have had sons at similar times, Kami wondered how both sons would react to each other should they meet but that wouldn't be for a while yet.
Kami outright laughed out loud after Bansuri conjured liquid soap under Piccolo's feet to make him slip and fall into a spiked plant in the wasteland, apparently Bansuri had a sense of humor although looking at the needles that the plant left in Piccolo's skin, it was obvious to Kami that his other half could use Some Help.