There's an Upside Down Flower on Renkotsu's Head
"Renkotsu no aniki?"
Renkotsu turned around and regarded the cause of most of Ginkotsu's loose cannons with a glare. "Yes?"
"Why are your markings purple?" Jakotsu asked quizzically.
Renkotsu took a deep breath and counted to ten. "Because they are," he muttered as he turned back to his work.
Jakotsu tilted his head. "Isn't that girly?"
"I do not believe you are in any position to talk about 'girly' colours," Renkotsu shot back, tightening a loose screw on Ginkotsu's body.
There were a few blissful moments of silence.
Broken yet again by Jakotsu.
"Hey, what's that blob on your head?"
Renkotsu looked heavenwards and prayed for patience. "They are part of my markings."
"…It looks like a blob to me."
"Then maybe your eyes could do with checking," Renkotsu said through clenched teeth.
Jakotsu squinted at Renkotsu's head and observed it for a moment. "Hey, I know!"
"What is it now?"
"It's a flower!" Jakotsu declared, completely serious.
"…What?"
"It's an upside down flower!" Jakotsu confirmed with confidence. "Hey, it looks great on you!"
The next day, Renkotsu begged Bankotsu if he could switch to blue paint and change the marking on the top of his head to a diamond or something. He was rejected on both accounts.