(It's assault) but another example is Rogi x Tatsyuki in this one http://www.mangago.zone/read-manga/yondaime_ooyamato_tatsuyuki/ . Basically Rogi did it because he wanted Tatsyuki's dad (who was his former partner) to come to rescue his son, and they could meet up again, because Akitora has been ignoring Rogi for presumably years, but Rogi is still obsessed/ at the end of his tether.
The time span is around 30 years, Jealousy covers most of this though. Also, regarding the assault (Rogi uses toys rather than himself to penetrate) Tatsyuki doesn't regard it as a crime, and knows that Rogi did it because he wants to see his dad, so he is even sympathetic to him, and in later chapters it shows him still in contact with him, even attending Rogi's daughter's school event together. So a bit of yaoilogic with that one.
Yeah, I'll say, he was a real sport about the fact that Rogi assaulted him. He was way too understanding of Rogi's disposition and feelings, considering the situation. I understand that kind of behavior is supposed to be an integral part of his character, but that's a bit much. Oh well, still a great read XD
Does anyone have some good recommendations for yaoi that focuses on two ukes getting together? I looked under the tag uke x uke, but I wanted to try getting recommendations first since it isn't a popular theme.