for you who doesn't know about hi, miiko! --poor you!-- *the real title is Kocchimuite Miiko*; here's the story :

YAMADA Miiko, our main character, is a 5th-grader.

Her best friends are SHIMURA Mari and OGAWA Yuuko (Yukko). Yukko’s boyfriend is SATOU Kenta.

SATOU is friends with EGUCHI Tappei, a boy who called Miiko, shortie.

YOSHIDA Ikuya is another boy that likes Miiko. lol

Miiko has a brother named Mamoru. Her mother works as a manga editor for Ocia (this is a pun from Ciao, the magazine where KM is being serialized) and her father is a salaryman. Since both parents work, Miiko and Mamoru share responsibilities with their house chores. But usually, Mamoru will take the responsibility to do more chores since Miiko is the typical laid back older sister. Despite that, throughout the book, you will see that Miiko loves her family so much.
Miiko’s story life revolves around the school and their two-bedroom house. At school, she is the constant target of being verbally-bullied by Tappei. It is funny to read and laugh at how Miiko and Tappei’s relationship is going. Obviously they enjoy each other’s company (though undeclared like Yukko-and-Kenta’s), but like any other school grader (and perhaps adults who read this, too) they had fights and quarrel very often. *smile* Meanwhile at home, their bedroom is the subject of a constant debate between Mamoru and Miiko. Both share the same room, however, Miiko doesn't share her roommate's frustration over being clean or tidy. XDDD
Meanwhile, as the story developes further, Tappei is easily annoyed and insecure whenever Miiko hangs out with YOSHIDA. He often interrupts the time that Miiko is alone with YOSHIDA and ends up making Miiko angry for being a pest. Some people suggest to Miiko that Tappei is rude to her, but she would deny it.
True, from our point of view, what Tappei is doing to Miiko can be considered rude, but he also—like Miiko said—has his own good attributes. Once he takes the responsibility and apologizes to their homeroom teacher when a vase was broken. It was actually Miiko who shattered it. And when Miiko forget her underwear and her house keys at the same time, it was Tappei who saved her from further embarrassment.
This manga also talks about friendship and family. Miiko and Mari have many differences, but Yukko is always there to make them think clearly. That doesn’t mean they are really dependant on Yukko, there’s always time when Yukko is confused and can not make up any decision and her two best friends help her. Uniquely enough, the stories portrayed show awareness about these issues: pet, people with bad intentions to children, the joy of giving, respect, and countless messages. I recommend this series to anyone who enjoys the values of life and friends, young or old.
The original series was titled ‘Miiko Desu’ (MD) and was in another magazine called Pyong-pyong (Boink-boink), which has been discontinued. At MD, Miiko is a 4th grader, and YOSHIDA doesn’t show up that often. MD is published in Indonesia with the title ‘Namaku Miiko’ (My name is Miiko!) currently at volume 4. Meanwhile KM is titled, ‘Hai Miiko!’ (Hi, Miiko!). There are also some spin-off titles like ‘Best of Miiko’ (latest here is vol. 3) and ‘Miiko in Edo Period’. All are great collections. And as a plus: this manga won the Shogakukan Award in 1996 in Children's category. The drawing maybe cute and simple, but the story runs deep into our heart.

credit : http://community.livejournal.com/mangacast/533839.html

*sigh* well, whenever i read miiko. i always remember this boy. his name? secret! lol. i already found my own Tappei ; he's just like Tappei for me. We fight oftenly and he also shy to confess his feelings *in the end, HE DID IT!* clapclapclap lol. but i'm not Miiko :p People thought we're a couple. LMAO. and some people told me i'm STUPID that i "refuse his request" . but trust me ; we can't be couple. being friend is the best choice for us at that time. i still remember ; one night he called me while i'm reading Miiko. then i laughed out loud *as usual* when read it, then he asked me why ; i told him "I AM READING". then he answered : "MIIKO?" haha. he knows me better than others :) i told him : you're such looks like Tappei ! even your face and the way you talks ; hey stupid Tappei !! lol then he answered : okay then, it's okay i'm Tappei, but you have to be Miiko? *spechless* Hello, stupid Tappei! How are you? I bet you're okay right now. Because --just like you said to me-- Tappei never cry, right? lol-- If someday you read this post ; then you'll know that i don't regret my decision! Byeee :)

xoxo, ctrul.