It'll be fine!

Overview

An animated music video from Project Pochama, a special medley called It'll be fine! performed by Megumi Toyoguchi. The songs featured consists of "Kimi no Soba de ~Hikari no Theme~" (君のそばで〜ヒカリのテーマ〜), "Ashita wa Kitto" (あしたはきっと), "Kimi no Mune ni LaLaLa" (君の胸にLaLaLa), and "Kaze no Message" (風のメッセージ) all of which were ending theme songs used in the Pocket Monsters Diamond & Pearl anime.

Source: AniList