Guess Who's Coming to NetBattle!

Pretty Pretty Princess! is the thirty-ninth Japanese episode of the MegaMan NT Warrior anime, and was adapted into the English dub as the forty-eighth episode, Guess Who's Coming to NetBattle!

Synopsis
Lan and MegaMan are about to face off against a really cool NetBattler named Whip and his NetNavi KnightMan! Only at the last minute, Whip runs off, chased by four mysterious women in black. Lan helps Whip escape, and they spend the day together touring the city. But it's not just a walk through the park. Not only do they have to avoid the mysterious women in black, they also have to fend off an attack by ShadowMan (sent by FreezeMan), who wants to steal KnightMan's special anti-virus program and delete him for Grave! Plus, Lan learns that the boy he's been hanging out with all day is actually a girl! Whip (who's really Princess Pride, although Lan never suspects it) reunites with her royal family but pledges to come back one day and finally finish her NetBattle with Lan.