Ever since having witnessed the Little Giant and his astonishing skills on the volleyball court, Shouyou Hinata has been bewitched by the dynamic nature of the sport. Even though his attempt to make his debut as a volleyball regular during a middle school tournament went up in flames, he longs to prove that his less-than-impressive height ceases to be a hindrance in the face of his sheer will and perseverance. When Hinata enrolls in Karasuno High School, the Little Giant's alma mater, he believes that he is one step closer to his goal of becoming a professional volleyball player. Although the school only retains a shadow of its former glory, Hinata's conviction isn't shaken until he learns that Tobio Kageyama—the prodigy who humiliated Hinata's middle school volleyball team in a crushing defeat—is now his teammate. To fulfill his desire of leaving a mark on the realm of volleyball—so often regarded as the domain of the tall and the strong—Hinata must smooth out his differences with Kageyama. Only when Hinata learns what it takes to be a part of a team will he be able to join the race to the top in earnest.

Tomoya Okazaki is a delinquent who finds life dull and believes he'll never amount to anything. Along with his friend Youhei Sunohara, he skips school and plans to waste his high school days away. One day while walking to school, Tomoya passes a young girl muttering quietly to herself. Without warning she exclaims Anpan! (a popular Japanese food) which catches Tomoya's attention. He soon discovers the girl's name is Nagisa Furukawa and that she exclaims things she likes in order to motivate herself. Nagisa claims they are now friends, but Tomoya walks away passing the encounter off as nothing. However, Tomoya finds he is noticing Nagisa more and more around school. Eventually he concedes and befriends her. Tomoya learns Nagisa has been held back a year due to a severe illness and that her dream is to revive the school's drama club. Claiming he has nothing better to do, he decides to help her achieve this goal along with the help of four other girls. As Tomoya spends more time with the girls, he learns more about them and their problems. As he attempts to help each girl overcome her respective obstacle, he begins to realize life isn't as dull as he once thought.

Haruhi Fujioka is a studious girl who has recently enrolled at the prestigious Ouran Academy. One day, while looking for a quiet and peaceful place to study, she stumbles across a seemingly unused music room. Upon entering, Haruhi is welcomed by the members of the well-known Host Club: a club in which attractive boys amuse girls from across the entire school. However, when Tamaki Suou—the founder and president of the club—startles the bright scholarship student, she accidentally breaks an expensive vase. With repayment looking difficult for Haruhi, the Host Club members come up with the perfect solution to the girl's problem: work for the club and ultimately become a Host herself! Mistaken for a boy by her peers, Haruhi has to entertain various female students while coping with her fellow Hosts' extravagant personalities.

Roaming the halls of the all-boys Sanada North High School are three close comrades: the eccentric ringleader with a hyperactive imagination Hidenori, the passionate Yoshitake, and the rational and prudent Tadakuni. Their lives are filled with giant robots, true love, and intense drama... in their colorful imaginations, at least. In reality, they are just an everyday trio of ordinary guys trying to pass the time, but who said everyday life couldn't be interesting? Whether it's an intricate RPG reenactment or an unexpected romantic encounter on the riverbank at sunset, Danshi Koukousei no Nichijou is rife with bizarre yet hilariously relatable situations that are anything but mundane.