Thanks to a heavy dose of filler adventures, the Boruto anime has done wonders for the top student of Naruto Uzumaki. In Masashi Kishimoto's original Naruto series, Konohamaru is introduced as the bratty grandson of the village's Hokage. Despite initially writing Naruto off as an idiot, Konohamaru quickly comes to respect the slightly older trainee ninja, and along with his two close friends, soon becomes Naruto's very first student. Konohamaru pops up sporadically throughout the story, most notably taking on Pain after being taught the Rasengan by Naruto.
By the time the Boruto sequel series begins, Konohamaru is an adult jonin with students of his own. Diligent and serious, Konohamaru does his utmost to lead Boruto, Sarada and Mitsuki successfully, and is one of the most powerful ninja in his village. But where the Boruto manga uses Konohamaru sparingly, the anime adaptation takes a completely different approach. Because of the varying release schedules between the two mediums, Boruto's anime has been mostly filler since debuting in 2017, and while this hasn't impacted the show's popularity, the quality has varied wildly. Some Boruto filler arcs have added interesting and useful context to the canon material (such as the recent Deepa and Victor saga), but others are a genuine ordeal to sit through.
Since the material isn't canon, Boruto filler doesn't usually offer much in the way of character development for the main cast, but Konohamaru is a rare exception. While the ninja is a side character in the main manga, Boruto's anime has added a bunch of completely fresh arcs where Konohamaru leads Team 7 on a mission-of-the-week - whether that be taking down factions of disgruntled rogue ninja, or stealing dangerous weapons from other nations. Watching Konohamaru partake in these more mundane adventures gives a closer look at how the impetuous young Naruto character has matured over the years. The audience witnesses Konohamaru's successes and failures as a leader, the teachings he passes on to his three young students, and how he strives to uphold the legacies of his Uncle Asuma and Grandfather Hiruzen, who both died in the original series.
Boruto's filler arcs explore Konohamaru's romantic life too, and Boruto encourages his sensei to enjoy life outside of being a ninja. But best of all, the Boruto anime makes Konohamaru look like an absolute badass, regularly schooling opponents with his intelligent strategies and formidable ninjutsu. Konohamaru is afforded far more time to shine in the anime compared to the manga, and his fights have provided some series' standout moments. The Boruto anime's Konohamaru pays off the potential hinted at in Naruto, rewarding viewers who have followed the character from his humble beginnings to his current position as one of Konoha's elite. Had Boruto followed the manga more faithfully, and without any episodic padding, Konohamaru's progression wouldn't have shone so brightly.
Anime filler often comes in for some harsh criticism and, most of the time, that's fully deserved. Non-canon arcs contradict, copy and cannibalize the source material, and it's usually painfully obvious when Boruto is avoiding telling manga storylines. But spending more time with the grown-up Konohamaru has been a silver lining in Boruto's deluge of filler, fleshing out his personality and motivations far more effectively than his canon appearances manage alone.