Follow the story of Haru, a concierge at the Pokémon Resort, and her interactions with Pokémon and their owners who visit as guests.

The Daihasei Festival has begun, and that of course means that Tokiwadai Middle School—a prestigious all-girls' middle school—is competing too. Despite the participation of the "Ace of Tokiwadai," Mikoto Misaka, the other students who are participating are still putting their utmost effort into winning, no matter how impossible the feat may seem against her might. However, not all is fun and games. Due to the the festival, Academy City opens to the outside world, and various factions have begun plotting ways to infiltrate the city. Misaka appears to be on their radar, and as the festival proceeds, people lurking from the shadows begin to emerge... Toaru Kagaku no Railgun T brings back the Tokiwadai Ace and her friends as they dive deeper into the dark side of Academy City. From terrorist attacks to ruthless underground projects, anything is possible in this city. [Written by MAL Rewrite]

Long before Rikuo Nura was born, the legendary youkai Nurarihyon, leader of a "Night Parade of One Hundred Demons," fell in love with a human woman. Though the two would initially find happiness, a threat from the terrifying fox-demon Hagoromo Gitsune would get in the way of their relationship. In the present, Rikuo has taken his rightful place as the heir to the Nura Clan. While he has accepted his youkai side, he must continue to maintain the secret of youkai, a difficult task when faced with the Keikain onmyouji clan and his youkai-obsessed friend, Kiyotsugu. Even so, Rikuo will do what he must to protect those important to him. The reappearance of the sinister Hagoromo Gitsune marks the start of Rikuo's most fearsome trial yet. The frightening creature bears a personal vendetta against his family and will stop at nothing to see her dream come to fruition. The world stands at a precipice, an all-out war that will drag Rikuo centerstage. [Written by MAL Rewrite]

Even though it has been a year since the Iwatobi High School Swim Club has been created, new members have yet to join the club. Now that Haruka Nanase and Makoto Tachibana are senior students, along with their younger friends Nagisa Hazuki and Rei Ryuugazaki, they have to find a way to attract new members. If not, the club will be forced to close the following year due to a lack of membership. Meanwhile, with impending graduation, it is also time for the seniors to decide their plans for the future. Unlike their friend Rin Matsuoka, the new captain of Samezuka Academy Swim Club who is determined to fulfill his dream of being a professional swimmer, Haruka and Makoto are unsure about what career path they want to take. Further problems arise when an old friend of Rin's, Sousuke Yamazaki, comes to the city to study at Samezuka Academy; the recently scouted swimmer's arrival causes tension in the relationship among him, Rin, and Haruka. [Written by MAL Rewrite]