"My, my~ Dear old Friend~"

TaxUT if you are wondering where I got the amazing art well go to Instagram to @artist_misty❣❤💗

•°Plot°•
At first, we see Undertaker come back to the place he used to be for more than a generation besides the family Phantomhive that are all gone now, but...he never knew that coming back would get him a long-lost friendship that he had with the old man Tanaka. Without even knowing that Tanaka hasn't been able to think positively about everything that is happening cause of Undertaker with fear he might fail Undertaker and Ciel as he did with Vincent... On the night of Vincent's murder hunting him every time he thinks about him and the kids together. Giving the whole fault to himself he will try to get Undertaker to get along with him before he confesses that for his fault Vincent died, but...something starts to make him feel speechless and out of words to tell Undertaker getting him to try to figure those feelings that he actually hides for ages making him think about just giving up finally of those long feelings he never understood on why they appeared after meeting Undertaker 58 years ago,..but when everything was going so calmly Tanaka send a letter to Undertaker that before he thought about it change everything around him and Undertaker....Undertaker in the end would remember all this and just try to leave it again in just a simple long dream after Tanaka's died that happened just 5 months ago... Undertaker's long friendship that he ignored for years was on the point of wanting to just say to Tanaka those last words were he last took his breathe. "..My, my, Dear old friend...."
----------------- [In conclusion] ------------------
Is that Undertaker is just imagining his "relationship" with Tanaka before he died because when Tanaka took his last breath he actually confesses his love for Undertaker, but...it was too late for him. However, Undertaker didn't understand what he said meant Love Love instead he thought Tanaka meant a friend Love thing..