Boring. Also, the answer is Sigmund Freud. I have no idea what this "Bupuroito" shit is but it sure ain't the answer to whomever came up with "free association" analytical techniques. What is this, amateur hour...
Just a fair warning that the Smut tag is a lie. They only have sex once and it's like 3 panels in total in the last chapter. :/
Gengenji