The episode's emotional weight lies in the revelation of how Seto Kaiba seized control of KaibaCorp.
For a deeper analysis of the duels and hidden details within the Virtual World arc, check out this breakdown: Things You Missed In YU-GI-OH! The Virtual World Arc YouTube• Apr 28, 2018 Yu-Gi-Oh! - Episode 109 | Yu-Gi-Oh! Wiki | Fandom Yu-Gi-Oh! Duel Monsters Episode 109
After surviving multiple hits and using "Spirit Ryu" to mitigate damage, Kaiba activates the Deck Master ability of "Lord of Dragons" . The episode's emotional weight lies in the revelation
Gozaburo discovered the plan and pressured Mokuba for support. Seto, anticipating this, staged a public "betrayal" of Mokuba, accusing him of leaking the plan. This was a calculated move: by letting Gozaburo think he had won Mokuba’s 2% share, Seto made Gozaburo overconfident, causing him to stop buying shares. - Episode 109 | Yu-Gi-Oh
Episode 109 of Yu-Gi-Oh! Duel Monsters , titled (Japanese: "Escape from the Satellite Cannon!!"), serves as the climax to the duel between Seto Kaiba and Leichter (the Big Five’s leader) within the Virtual World arc. The episode is a critical character study of the Kaiba brothers' past and their loyalty to one another. 1. Narrative Core: The Betrayal Flashback