Unknown comic, translated to English, where a man dreams/fantasizes about being shrunken down and forced to enter his daughter-in-law's vagina prior to and then during her cheating on his son (her husband). Many internal shots. Then there's more random giantess stuff and he wakes up.

Strictly speaking, daughters-in-law are not related to their fathers-in-law by blood, so this isn't incestuous.

It IS hot as shit though.

Base +7

This is part of the story Eurygraphe.

Base +6