Responses
Did you red the prequel ? might help you understand since Sakurako appears in it, you can see more about what happened during their wedding.
http://www.mangago.zone/read-manga/umibe_no_etranger/
Oooooooh my god! Everything makes sense now! Thank you so much!
I did not understand shit, like, wtf? The dialoge did not make any sense, i hace a general idea of whats going on but i dont understand much