The protagonist. In his second year of high school, and goes through life with the aim of living as efficiently as possible, having only [a single friend](https://anilist.co/character/206367) as a result. Considers himself as average as they come, but is secretly the director of the 05th Floor Alliance. His profile picture on LIME simply says: AKI.

For high schooler Akiteru Ooboshi, the whole youthful experience thing—like fun, friendships, and even having a girlfriend—is a complete waste of time. So when his best friend’s sister, Iroha Kohinata, keeps teasing him, Akiteru naturally finds it annoying. She practically lives in his room, she’s always on his bed, she’s just a raging storm of clinginess! Why is she only annoying around him?!
 
(Source: Crunchyroll)

**Height:** 171 cm

[Twitter](https://twitter.com/haruki_yokkora)

“My best friend is the only one who has my spare keys, but for some reason, his little sister always sneaks into my room...” Ooboshi Akiteru is a high school boy who is the very definition of ordinary. He leads an efficient life while being content with his unmemorable existence until his days are completely changed by Kohinata Iroha, the younger sister of his only best friend, Kohinata Ozuma. She pesters Akiteru daily to the point he finds himself caught up in all kinds of troublesome situations. What’s more, he meets other girls who also have attitudes that are hard to deal with! Annoying and cute girls are the best! The popular, teenage romantic comedy begins now!
 (Source: MANGA UP!)

If a girl teases you, that means she likes you! 
Unfortunately, Akiteru knows from experience that isn't the case. Because every girl he interacts with shows him nothing but scorn, and he's not scored a single date from it! Luckily, he's more concerned with securing a spot for him and his game-development buddies at his uncle's business.
 
But when his uncle throws him a condition that involves playing the part of his daughter's boyfriend, Akiteru has no choice but to take it. What will his best friend's sister Iroha, who bullies him relentlessly, think of the news?
 
(Source: J-Novel Club)