Baka & Test: Summon the Beasts

Baka & Test - Summon the Beasts - is a light novel series that received an anime adaptation which aired for two seasons from 2010 to 2011.

The story is set at Fumizuki Academy, a school where the students are divided into classes based on their results in the entrance exam. Ranging from Class A to Class F, students can also summon "Avatars", small versions of themselves that battle using special powers in "Summoner Test Wars". Akihisa Yoshii is the titular Baka (Idiot) who is frustrated by the school's decision to place his childhood friend Mizuki in Class F just because she could not finish her exam due to a fever despite her intelligence, and after speaking to class representative Yuji who feels the same way as he does, the class vows to prove to everyone that there is more to life than test scores. Taking part in the Summoner Test Wars, they aim to take down Class A and take their classroom for themselves.

Episode 1
Hideyoshi transforms.

Episode 2
Akihisa imagines himself undressed.

Episode 3
Akihisa's shirt flies up as he scratches his back.

Episode 5
Kouta's, Hideyoshi's, Yuji's and Akihisa's shirts fly up, Toshimitsu feels trapped, two students are changing their clothes when the door is opened, and both Yuji's and Hideoyoshi's clothes are damaged after their bracelets explode.

Episode 6
After getting caught while attempting to take a bath at the school due to a lack of hot water at Akihisa's house, he and Yuji are punished by being tasked to clean up the school pool. Later on, everyone visits a public bath.

Episode 8
Yuji's Avatar exposes his chest.

Episode 9
Shouko tries to take off Yuji's pants to search for his phone, the others misunderstand Akihisa's message to Yuji, and Akira brings out pictures of Akihisa bathing.

Episode 11
Akihisa wears a disguise as a planned distraction in Class F's fight against Class B.

Episode 12
Kouta imagines boxing Yuji.

Episode 13
Akihisa takes a bath.

OVA 2
Akihisa's shirt is damaged after he gets into a fight with Yuji.

Episode 1
Akihisa and his friends visit the beach.

Episode 2
Kouta's shirt flies up.

Episode 4
Mizuki imagines Akihisa with his shirt unbuttoned, and she knocks out Hideyoshi before he finishes taking his shirt off. Akihisa and Yuji are forced to strip to their underwear after losing the card game against the girls.

Episode 6
Hideyoshi wears a loose yukata.

Episode 7
Hideyoshi's yukata has loosened, Akihisa accidentally loses his yukata while escaping from Nishimura, and he tries to take Yuji's yukata for himself.

Episode 12
Yuji's Avatar has transformed into a shirtless werewolf.