I just lost the last manga I was reading

I was reading this manga, reaching the end, when my browser took a weird flex (but ok) and led me to an ad page... without allowing me to go back. I was apparently logged out, so can't trace it. It was about a guy at high school who looks very cool and fashionable because he has three sisters, and he is known as a playboy almost, but he is a virgin. This other guy is too blunt and does not like owing anything to anyone. That is how protag takes an interest to this guy, and they start this kind of "relationship trial" but fall for each other. Any help? Thanks xx