Sparkle-Hello! The Day Daia and Daia Met, Damon!

Synopsis

A letter arrives at Nijinosaki-san — who lives alone with her grandmother — from her parents abroad, after a long time. To their question, "Are you still lonely?", she answers in her heart that, unlike when she was small, she isn't lonely at all anymore. As she reads the letter, she remembers the moment she first learned about Pri☆Chan, and the day in the past when she met Daia.