vanilla's manga / #Twisted-Plot(2)

i LOOOOOVE this manhwa so much. it's not one of those stereotypical yaoi mangas that are like lovey-dovey, high school, shy and cute. Like, it breaks down all of stereotypes and it shows the diversity of yaoi mangas. I love the plot so much and the characters are well-written. Love thissssss

also, can someone explain the ending (the christmas tree part)?? like what??? i am so confused! someone explain please