30 Soushi de Odoroku hodo Kantan ni Hanaseru youni Naru: Manga de Eikawa - ANGRY BIRDS STELLA

Nana ends up transferring to an overseas school after her parents are reassigned to another country. Since she can hardly speak any English, she cannot make any friends and is always alone. One day, she meets a spirited pink bird named Stella at the school's botanical garden. Stella tells her to collect mysterious English word cards to save the school. (Source: Fandom)