I'm looking for any ROMANCE manga where the Male lead is in love or has fallen in love with his SISTER's BESTFRIEND...
The bestfriend can either be male or female... Meaning I don't mind YAOI..
Shoujo and Josei is much preferred but anything goes as long as there is romance..
Please exclude the YURI and HENTAI
Thanks in advance..

"The world is a dangerous place to live, not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein

None of these are really straightforward, but they do involve a brother who falls in love with his sister's friend. I couldn't really think of anything until I thought of it as "Girl falls for friend's brother."
Banana Bread no Pudding
Oniisama e...

And there is this one, where a sister falls in love with her brother's best friend: Migawari Hakushaku no Bouken

Thanks for the recommendation meredithbecca!!!!! 😀 😀 😀

"The world is a dangerous place to live, not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein