Digimon Tamers (2001)

S1E11 Much Ado About Musyamon

Musyamon launches an attack on Henry, prompting Takato to leap in to help. However, Guilmon struggles to hold his own, leaving Henry to grapple with his concerns about Terriermon's Digivolution after his previous experience with Gargomon's power. When a young girl finds herself in danger, Henry takes action, allowing Terriermon to Digivolve into Gargomon once more. This time, Gargomon is able to maintain control and defeats Musyamon. In the end, Henry understands that some battles are simply unavoidable.