"The Xth Generation of Vongola (Gang Yun)" is an extra chapter and a white chapter.
It can also be watched independently, without any explicit auxiliary CP.
"Hey, Xiaozheng, do you know the flower language of Ou Heather?"
"Heather's flower language... Is it lonely...?"
"With Xiao Zai, how can I be lonely?"
"The flower language of white autumn peonies..."
"Life, expectations, and... A touch of love?"
"The correct answer is betrayal of love, Xiaozheng~"
Both 10-white and 10+white are HE.
It's silly, sweet and non-violent. Welcome to CP mysophobia fans. It's finished.
Conception: