Pokémon: Pichu Bros. in Party Panic is a oVA anime that premiered in summer 2003, produced by OLM.

About the production: the story comes from a video game, there is 1 episode of about 20 minutes and its current status is "finished".

Its main genres are adventure, comedy and fantasy, with themes such as Animals, Band, Urban and Kids.

On AniList, Pokémon: Pichu Bros. in Party Panic has an average score of 60%, an average score, and appears on 3,752 users' lists.

This is an animated cartoon that was released inside the game Pokémon Channel. A half-hour long anime show, broken into five short segments, featuring the Pichu Brothers. Meowth throws a party that the Pichu brothers and their friends are not invited to. After a series of events, they find out they were invited, but their invitations were simply delivered late. They go to Meowth's Party and hear him sing. The series has a total of five episodes, each on its own channel. (Source: Wikipedia)

Official synopsis from AniList.