After watching Sherlock Season 4, I, who used to be a proud person, changed my aesthetic to a straight woman without hesitation. . Mary's death is something I really can't let go of. Especially the sentence "you are my whole world." Is really a tear-jerker. But in the next two episodes, we are also very happy to see Peanut slowly heal and transform, accept the fact that Si Ren is gone, and bravely walk the next road. This article will focus on describing Peanut's psychological change process, interspersed with memories, and spoilers for the fourth season.
Attached is an explanation of the title, Waterloo, the famous Waterloo. I think it echoes the theme of the fourth season that revolves around water and the deep sea.