In Chapter 3, Miu is one of the students who antagonized Angie's Student Council, as she considers God's existence to be unscientific. She is also annoyed when the Student Council begins to limit the other students' freedom.
After Angie's death, in the next chapter, Miu is seen being happy and relieved that Angie died because it stopped all the annoying talk about Atua.
Some people ship it because sometimes Angie may be friends with Miu, but some people dont because Miu dislikes Angie in a different way. It may be not canon yet but people ship it.
- Both are dead because of a male (Angie was killed by Korekiyo and Miu was killed by Gonta)