Rage Town was pretty fucking obnoxious, but I guess at least Fuuka's not really a Rage Manga. It's more of a huge Troll Manga with regards to the title character and then just kind of a regular slice of life that doesn't do anything irritating, but isn't even remotely great.
The most rage inducing thing is mostly how much the main characters take for granted the ridiculous opportunities their band receives. Like, forming a rock band in real life usually requires you to play backyards and dumpy clubs and drive around in a dingy van. These guys get shows at relatively happening clubs straight out of high school and get signed to a label the day after playing in a battle of the bands, assisted by the Guitar Girl's brother being a member of the most popular rock band in the country, (also, their homeroom teacher is a member of this band, not kidding, and the guy they did part time work for to buy their instruments is also in that band, all of which leads to them getting a personal invite to said band's huge rock festival) not to mention the lead singer's harem including a Huge Pop Star from the United States, and also the most popular idol singer in Japan.
Also, a big plot point arose wherein everyone told the lead character he looks like a big dope on stage and needs to figure out how to create a stage presence. The only attempt they had at resolving this plot thread was a chapter where the Guitar Girl literally offered her virginity to the main character because in Insane Troll Logic Seo land this would somehow help. Being a Pure Noble Hearted Lad, he barely even acknowledges that happened and they resolve the plot line by him SINGING REALLY LOUD AS SHOWN BY CAPITAL LETTERS at the point at which he is supposed to resolve this. Then it doesn't seem to get mentioned any more.