Episode 16

Maxing Defense and Tower Conquest is the fourth episode of the second season of the BOFURI anime series.

Summary
On the event's second day, Maple and Sally reach the fourth level of the tower, where the Giant Sea Turtle boss ambushes them. Despite its imposing presence, Maple was fascinated by it and suggested to Sally that they ride on its back for a bit. Reluctantly, Sally agrees, and they enjoy themselves. While the Admins make several modifications to the level, so it's optimally challenging for Maple, they're astounded to learn that Maple and Sally were relaxing on the boss' back. Although the Admins were confident in the Giant Sea Turtle's power, the combined efforts of Maple and Sally allowed them to defeat it.

Meanwhile, the rest of the Maple Tree guild members defeat a bunch of zombie monsters led by a Skeleton Knight. Switching back to Sally and Maple, they conquer same floor as she used Atrocity to carry Sally in her mouth while crushing the undead and the boss on this floor, which is witnessed by the Admins who shift their attention to the Holy Swords who face off against a Druid Summoner. Elsewhere, the Flame Emperor navigates through an Antarctic-themed level from there they defeated a Porcudillo.

A briefing is held at the Maple Tree guild, where it's learned that the Holy Swords party has made it to the 8th level and the Flame Emperors have reached the 7th floor. Keeping tabs on the top three guilds, the Admins comment that they've all managed to reach the 8th level, though the Holy Swords had reached it the fastest.

On the 8th floor, Sally and Maple face off against a Giant Chameleon that afflicts Maple with a potent sleep ailment, which the Admins relish, until Sally defeats it.

The 9th floor featured disappearing platforms and a Pillar Bot Boss, which made Sally and Maple difficult to defeat. However, she destroys it thanks to Maple using her Machine Body modified into its drill form, allowing them to access the 10th floor. The feat was witnessed by the Admins, who claim that Mii and Payne's group had reached the 10th level as well. While continuing their observation, the Admins had high hopes for the boss they created to beat Maple, dubbed the most powerful boss they've created to date.

Upon reaching the tenth floor, Maple and Sally face off against the event's final boss, the Antler Knight, who possesses powerful attack and speed. Despite struggling against its various phases, the pair manage to defeat the boss. In the end, Payne's party cleared the event first, then Mii, and sequentially Maple's.

After the event, Maple and Sally rest in their Guild base. It's revealed that Sally got the Water Manipulation Skill, while Maple got the Unbreakable Shield skill. They're soon joined by their other guild mates who had just beaten the event, and Mai and Yui reveal that the 7th level will be unveiled soon.

Characters

 * Sally
 * Maple
 * Chrome
 * Kanade
 * Mai
 * Yui
 * Kasumi
 * Iz
 * Frederica
 * Payne
 * Dred
 * Drag
 * Mii
 * Misery
 * Shin
 * Marx
 * Syrup
 * Oboro

Mobs

 * Plague Spector

Bosses

 * Giant Sea Turtle
 * Skeleton Knight
 * Druid Summoner
 * Porcudillo
 * Giant Chameleon
 * Pillar Bot
 * Antler Knight