Slippery Okuta-San summary:

Ayu and Yamame hear a rumor that this year's first-year students at Unabara High School will have an international student from the sea among them. They waited for the exchange student by the sea, but couldn't meet her. On her way home, Ayu stopped by a bookstore and met an eight-legged girl...? This is a soothing series depicting high school life with Okuta-san, a slippery and pure girl!