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The first link shows the characters of Amnesia, an anime based on a otome game. http://myanimelist.net/anime/15085/Amnesia
The second link looks very familiar but I can't recal where it's from, I'm sorry ><
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The taller black-haired one looks like Shinonome from Amatsuki, but I'm pretty sure the image isn't from there. Sorry I couldn't really be of help.
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http://bato.to/comic/_/comics/donten-ni-warau-r560 that's the manga you're looking for, it's a really good one ^^
Hello, does anyone know which manga is this from please?
http://www.mangago.zone/read-manga/27_ji_ni_koi_wo_sasayaite/mf/v01/c003/3/