From Digital-Wing.com:

In the December 1998 issue of manga magazine Young You, Naoko returned from her yearlong break from work with a new series: Princess Takeuchi Naoko's Return-to-Society Punch!!. This "private essay comic" is a silly narrative in manga form about the events in her life." After her post-fame with Sailormoon...this is Naoko's return.

From MU:
Toki Meka was originally Takeuchi Naoko's first manga after a hiatus of nearly four years. It appeared as a yomikiri in the September 2001 issue of Nakayoshi. At the end was a note requesting letters from people who would like to see a continuation, but shortly after, Takeuchi started the unrelated manga Love Witch.
The story is about Hoshiko finally creating the perfect robot girl doll!
Summary: When Mimii was young, she was friends with Hoshiko. Hoshiko had to go to the United States because she was studying abroad. Mimii makes Hoshiko promise that they will always be friends. And this is where the story starts.
Meca shows up in Mimii's life 7 years later to become her friend, and to help her. However, Meca isn't exactly all that Mimii thought she would be. Meca keeps getting into trouble, saving people's lives, and summoning various people/robots/objects with her cellphone.

The story about a girl named Chieri (nicknamed "Cherry") who began ice skating ever since she saw the handsome ice skating champion Tsuzuki Masanori skate.

She pursues her dream of being Tsuzki's partner, all the while facing her rival, 'Princess' Canty. With the help of her friends, and her own courage, can Cherry win the heart of the boy she loves so much...?

Chocolate Christmas is about a DJ named Choco, a girl named Ryouko, her friend Makiko, and an annoying boy named Keiki. Ever nostalgic, beautifully crafted, and sweet; it's a funny story with a few quirks here and there.

[Also known as Miss Rain]-
"Where Kuramitsu Rena goes, it is sure to rain... Before she knew it, she got the name 'Miss Rain'... Including the title work, five jeweled masterpieces of Naoko are recorded. For the romantic you..."

'Miss Rain' has 5 stories
Miss Rain
Boku no Pierce Girl
July Marmalade Birthday
Maigo no Swing
Itsumo Issho ne

'Wink Rain' is part of the manga called 'Chocolate Christmas' and is not part of 'Miss Rain' originally.

Usagi Tsukino is a normal girl until she meets up with Luna a talking cat who tells her that she is Sailor Moon. As Sailor Moon Usagi must fight evils and enforce justice in the name of the Moon and the mysterious Moon Princess. She meets other girls destined to be Sailor Senshi (Sailor Scouts) and together they fight the forces of evil.

Note: Naoko Takeuchi released a re-illustrated version starting in 2003 after she had dropped Love Witch. This new edition had new cover art and title logo as well as slight corrections to dialogue and the artwork.
Won the Kodansha Manga Award for shōjo in 1993.

Ai is from a family is a long history of witches. However, only females in the family can become witches, and males born into the family are usually born to be cursed with bad health, which is her brother's problem. He's sick with a terminal illness, but there seems to be a chance she can save him if she can become a witch.
(Source: Wikipedia)

This is a collection of manga short stories done by Takeuchi Naoko, from her debut in 1986 through her first work after the completion of Sailor Moon in 1997.

P and Q are two alien girls from planet Fuiren and their queen's special bodyguards. When she gets lost, they journey to Earth to find her. They try to live as normal schoolgirls, but since they can transform to and from cockroaches and frequently end up fighting off monsters, a neighborhood boy begins to gets suspicious.

Maria is a girl attending a Christian private school. Her mother is sick and in the hospital, her family poor. They live off the money of a man who's identity is unknown to Maria. He is called "Daddy Long-Legs" and he supports Maria and her mother with only one fee: Maria becoming his bride. Just who is this mysterious man? Is it the doctor? Someone she does not know? A boy from school...?

**This is a prequel to the manga 'Sailor Moon'
You can even find Usagi (Serena), her friends the Sailor Scouts and even Luna? in this manga.**

Codename Sailor V tells the story of Minako Aino, a 13 year old middle school student, who is slightly distracted, out-spoken and dreams about some day finding true love. But soon, her calm and normal life changes when she encounters a talking white cat with a crescent moon on its forehead. This cat introduces himself as Artemis and claims that Minako is a girl with the power to transform into a Sailor Scout.
He calls her "Venus" and tells her she has a mission to protect the Earth. To help her with her new mission, Artemis gives her magical items.
Sailor V begins fighting the evil known as the Dark Agency, who fight under Danburite's command. He's in charge of sending his many talented idols to enslave the public.
She also later gained the aid of Kaitou Ace, who has his own TV show. Will she provail against evil and find her true love?