Chapter 6

Experiment #6: I-I Umbrella (実験その6: II傘（アイアイガサ)) is the 6th chapter of Ueno-san wa Bukiyou.

Plot
It's raining out and Ueno has a new invention to alleviate the need to carry an umbrella around. Ueno climbs on the counter and places a suspiciously shaped object on Tanaka's head which prevents water from being poured on his head. This is the I-I Umbrella, a device that creates a reverse gravity field to repeal water droplets away from your head.

While explaining the device, Ueno slips in some of the water she poured on Tanaka. She accidentally kicks Tanaka in the head, and she falls onto the other I-I umbrella. As Tanaka looks back, he sees Ueno sweaty and red-faced holding her butt.

Tanaka is concerned, but Ueno backs up from him until she runs into a desk, which pushes the button on the I-I Umbrella. This poofs her skirt up into an umbrella shape, causing her even more embarrassment. Yamashita checks it out for Ueno. She finds the I-I Umbrella is only stuck in her panties. She takes it out for Ueno.

Later, Tanaka approaches Ueno, having forgot his umbrella. Ueno reluctantly lets Tanaka share her I-I Umbrella. Tanaka keeps pulling Ueno closer to get out of the rain. Ueno acts annoyed with this, but she lays her head on Tanaka's shoulder as the walk together.

Cast
Ueno

Tanaka

Yamashita

Title

 * The title is a pun on the Japanese Ai-Ai Umbrella (相合傘), a compound phrase of "doing stuff together" (相合) and umbrella (傘), the first two characters of which are pronounced the same as the word for love "ai" (愛). As a symbol, the ai-ai umbrella appears as a drawing of an umbrella with two names under it and is a common symbol for love, like an arborglyph in English speaking countries. Putting this together yields the pun I-I Umbrella (II傘)
 * 相合傘→II傘