Kamen Rider Build 28

Episode 28; Genius Arrives in a Tank; 天才がタンクでやってくる
	Kamen Rider Build episode
Writer	Muto Shogo
Director	Tasaki Ryuta
Action Director	Miyazaki Takeshi
Original air date	March 25, 2018
Viewership	3.3%
Forum Thread	Thread
Fan Rating	4.25 / 5
Episode chronology
← Previous; Episode 27; Counterattacking Hero	Next →; Episode 29; Bells Ring on the Curtain's Rise
	Episode List

Kamen Rider Build
< Ep 27	Genius Arrives in a Tank 天才がタンクでやってくる	Ep 29 >
Aired with Lupin VS Pat 07

Important things that happened

Kazumi reminds viewers that he's 29, which promptly confuses Banjou who mixes it up with the episode number.
Sawa forming her arms in a circle is the Japanese symbol for "OK". That's why the circle button on some Japanese Playstation games is used for confirmation instead of X in America.
In the recap, episode 28 is written on Nanba's taiyaki. Nanba eating the taiyaki has become the trait associated with his character, since his face is changed at the end of the episode.