Blood and Roses :Chapter One:

Sven has fallen head over heels and developed hanahaki over Burt. Burt has been crushing on Sven since they met two years ago. Both don't know how to tell each other and poor Sven's hanahaki is getting worse. The silver rose petals keep falling, will Burt be able to help the love of his life? Right Hand Man and Reginald Copperbottom are married in this reality, Sven is their son. Ellie Rose and Henry Stickmin are like siblings. Swearing, angst, and shit like that

Here is the lovely cover picture, it is not mine
https://www.pinterest.jp/pin/666532813601845225/