Osoraku Kanojo wa Ore no Aniki o Neratteru

Youta Tohno has been consistently used and deceived by girls seeking to get closer to his handsome older brother. As a result, he has grown wary of girls and developed trust issues. This trauma resurfaces when a pretty female classmate, Izumi Houjou, often starts talking to him, making him suspicious of her true intentions. Is she just trying to get to his brother as well, or does she actually mean something else?

Note: This manga is published by HanaYume

https://manga-park.com/title/90915