This is the one shot of the movie that Sana and Naozumi starred in from Kodomo no Omocha.
A 14-year-old boy, after the loss of his parents, starts researching his older brother, who has mysteriously disappeared several years before. He finds him in a strange palace, with his two friends who had also disappeared. At first, the boy is happy, but then he discovers that something horrible has happened in that palace, and he might just become a victim too.

Cheerful middle-schooler Miku lives on a mountain farm with her grandpa, where they keep a large number of animals. When Aruga- a senpai at Miku's school- concocts a plan to help some local stray animals that are causing a nuisance, fellow animal lover Miku seems like a natural choice to help out. As the two of them become closer, Miku finds herself falling in love... but will dense Aruga ever figure it out?

From Sugar Oasis:

Kou and Yukako have been friends since elementary school but over the years Kou has fallen in love with his childhood friend and when he found out that she was moving as a result of her family mounting debts he was devastated at the prospect of losing his best friend and the woman he loved.
That was back in junior high. A few years after their separation, Kou and Yukako meet again. Kou is happy to see her after so many years apart but at the same time shocked at how frail and thin she has become. The strong genki little girl he knew was gone and in her place stood a half-starved homeless girl forced to steal to eat.

A one-volume work containing 4 stories total, including the title work "Shiranami no Illusion"

- Shiranami no Illusion
Ryo is a boy who loves flirting with girls. One day, he met a beautiful girl named Touko by the beach. Ryo is soon deeply attracted to Touko, but because of an incident where her fiance died in a tragic accident, Touko locked up her own heart. How is Ryo going to help Touko leave her sadness and pain?

From Evil Flowers:

Honey Bitter meets Kodomo no Omocha. Shuri is a private detective with a special ability to read minds. She usually handles all sorts of cases, but this time she is faced with a rather unusual request. The famous actress Kurata Sana is going to play in a new film as a detective. She wants to be able to impersonate her character as best as possible so she asks Shuri if she can stick around to learn a few things that real detectives do and how they act. Despite this childish request, Shuri also recieves a more intimate request from Sana's manager, Sagami Rei, who wants to find out the reason why Sana and her husband, Hayama Akito, have decided to live separate one from another.

Sana Kurata, a child actress, faces many problems in her classroom, including a major one - her bullying classmate, Akito Hayama. Sana's outgoing and friendly nature leads her to work towards correcting all of the problems around her. Her 'meddling' irritates Hayama but at the same time captivates him, just as Hayama's gloomy nature irritates Sana and compels her to change him. As these two opposites attract each other, they face many hardships which bring them closer to a mutual understanding.

This manga won the 1998 Kodansha Manga Award for shōjo.

From ShoujoMagic:

High-school freshmen and twins, Nae and Moe, and Ken and Takeshi, enjoy their lives as students and close friends. Until Moe suddenly dies in a traffic accident... and her corpse disappears? Between the vanishing corpse and a pharmaceutical corporation, her three remaining friends are struck with the reality that something is amiss in their world...

From Manga Art:
Mei is a 2nd year junior high student from the Wind Orchestra Club. She lives with her older brother, Natsu, a musical genius. Actually, they don't have any sibling blood relation. When Mel, a pretty girl also gets to live with them, Mei with her complicated feelings...

Because of the extraordinary power she has, Shuri Otokawa was always living in the dark full of fear and distress. Eventually, she decided to become more optimistic about her life when she started a new job at her aunt's research laboratory. However, at such a crucial time in her life, the one who appears in front of Shuri is...?!