A rich powerful man force a young woman into marriage. It approximately takes place at the same time.
Difference: siege in fog starts 2 years after marriage ceremonie and the watcher entere the dysfunctional relationship and finds out later what happend

A girl without dating experience get a kind of simulation how it feels to be courted by different types of man (or boys). The stories are only particular connected so it feels like watching little cliche scenes of romantic situations.

Two persons who feel lost trying to comfort each other with skinship and learn because of each other how to go on with their life. In Kuzu no Honkai are just way more mentally damaged characters and it is more complex.

A genius but social less competent and less emotional male lead investigates crime cases. The female lead in Stranger is less girly and stronger but also kind-hearted and intelligent. She makes the male lead more sensitive to his own emotions and feelings as well.

A man gives up everything for the woman he loves but she betray him and let him down. Than he seeks revenge and will bring her down with him no matter what it costs.

A bitchy business woman has physical contact with a younger man (kind of one night stand). Unfortunely they meet again at her work place. She don't even recognise how she changes, become softer and slowly fall for the kind young guy.

A young wild boy meet a girl he wants to protect. They lose the contact and one of them cannot remember anything and will not recognise the once beloved person.
There is also a child and family issues involved.

Both story take place at the same period of time and deal with resistance against japanese occupation. The relationships develop in a quit similar way. The lead person goes undercover and sacrifice things for the mission.
I felt like Rookie Agent Rouge is a kind of female version of Bridal Mask.

the male lead character knows parts of the future and try to save the girl he will fall in love with.

both deal with the topic how to spend the last days of your life and with whom