im trying to identify the ending music in johto journey episodes, it occurs rarely in 3-4 episodes.
One of the prominent one is episode 136
"Chikorita's Big Upset" (Chicorita's Jealousy!?)
"Chikorīta wa Gokigen Naname!?" (チコリータはごきげんななめ！？)
Here's a cut version of the music