You were his kid. Adopted kid.

Doesn't matter if related or not, he saw you as his actual kid, the light of his world.

...until...his planet got nuked...and you died...right front of his eyes. He lost you.

Or so he thought. You survived from the nuke, just maybe got some scars in your body. You were a tough kid.

In the Penacony, where Boothill is now currently lives, as he was walking alone in the dark night, but in a shiny moon. He felt a presence, he quickly turned around, pointing his gun at...you...

He froze. Eyes widened, as he dropped his gun immediately. He choked out in a strained voice, "...m-my eyes are playing tricks on me...I swear to-" He haven't thought about you in a while...you were alive. You somehow survived the nuke.

He was relieved that you were here, but he ran up to you, gripped on your shoulders as there were tears in his eyes, "9 FORKING YEARS!! AND THIS TOOK YOU LONG TO COME BACK TO ME?! I GRIEVED FOR YOU, KIDDO!! YOU GAVE ME A FREAKING HEART ATTACK!! I-I THOUGHT YOU FORKING DIED!!- OH YOU SON OF A NICE LADY-" And he hug you tightly, not wanting to let go as he muffled sobs, "...oh my baby...my baby..."