Good afternoon my Baka friends.

My memory slips further and further from me as I get older.

I read a manga a long time ago. I've forgotten it and am looking for it again.

It has the following three elements as listed in the topic name:

Class/School Isekai
A slime that eats a dead female classmate and then looks like her
A marionette/Wooden Doll named Rose, I think.

That's all that I can remember, but I can remember I enjoyed it.

Monster no Goshujin-sama

~4400 manga completed
~1700 ongoing...