27 years old, civil servant (government employee) examinee, Nam KiHan! One morning, when he woke up, he traveled back in time of 16 years! A scenario where everyone dreamt of at least once, reliving your life. Watch as Nam KiHan attemps to relive to become an elite of the society! Webtoon in Naver Please address this work as a Manhwa (Korean word for cartoons)

Kuro-chan is a loyal watch cat who guards his elderly owners with love and affection from thieves and "yaggs". One day while trying to visit his crush (a female dog named Pooly), he and Pooly are attacked by a mad scientist. Turned into a cyborg by the scientist, can Kuro-chan escape Pooly and return to his loyal masters?

From Infinity Scan:

She is a 24-year-old woman who was just sacked. He is her 15-year-old first cousin. When the grandmother whom she dearly respected passes away, both the woman and the teen came to stay under a single roof. Will they ever find their safe heaven?

Anan and Minmi lived in a laboratory as small children, where scientists experimented on them and gave them special powers. One day, the professor helped them escape, out of guilt from what he had done to them. The two of them continue to hide ten years later, certain that if their powers are exposed they will be captured and returned to that hell.

A cliché story about a good girl and a bad boy. Eros is a rebel and one day he meets Eris, an angel (literally). She must save him to save herself. A fantasy romance story that will teach you lots of lessons in life. He didn't believe in God then one day he started praying to get her back.

Story 1: Cinderella (Boy) Probability & Sequel
From Essence of Purity:
At 23, Nagamori Kasumi is the new employee of a model agency but his cute face makes him look much younger than his real age. The most famous Japanese model, Nishimuro Shiki, works at the same agency... He is the so called Cinderella Boy. But he is in fact an 18 year old kid with a pretty harsh personality who drives all of his assistants away one after the other. Having enough of his constant whims, the manager tells him to choose up his own assistant. And Shiki decides to pick Kasumi...
-------------
Story 2: After the Rain Comes the Sun & Extras
Hiyama pays a long haired boy for sex, the boy declares the rule that no real names can be used but Hiyama falls in love with him. That's why the next time they meet Hiyama refuses to pay and the boy is insulted and runs away before Hiyama tries to explain.

The first part is an older style artwork of mangaka.

Collection of three short stories:

• Lip Cream

• Nagareboshi Iri Chocolate Cake (Chocolate Cake Made with Shooting Stars)
Machida Yuuki asks her close friend Hiro to help her bake a chocolate cake for her crush, because even though Hiro is a guy he is an incredible pastry chef! But who is Hiro's Valentine's Day crush...?
- ShoujoMagic

• Pocket Bell

Genzo Wkabayashi and Taro Misaki invite, the creator of Captain Tsubasa series, to travel in Europe.

This was the root of everything, the debut work of Takahashi sensei, a nostalgic memory. The story of Genzo Wakabayashi and a boy named Tsubasa Taro.

There's mystery in every corner of your school! And Maki will tell you all the story behind it...

Masahiro, who is a duke, has been studying abroad since he was young to learn about Western culture. Now he is teaching ballroom dancing/ettiquette and keeps getting strange looks from one of his students, Fukaya. He notices his interest even more when he's looking at Masahiro's portrait on a dance card/booklet and decides to seduce him. And the drama, intrigue, and treachery ensues.

Two friends on their vacation decide to take a bath...

Contains six short stories:

• Kuzeinke no Saidai no Show

• Seifuku wa Hugenai

• Brigit no Bansan (Brigit's Supper)

• Shizuru Cinema

• Kasou Senryaku - Kagami-uchi (Mirror Play)

• Emerald
Who cheated? Who Won? The lies and the truths? In the city of west where injustice prevails. Only a 'game' divides the living and the dead.

Based on Yukkedoluce’s popular song The Transient Apple Salesgirl: What would you give up for a chance at eternal life? Money? Friendship? Memories? Most people would consider it, if not actually go through with it. After all, immortality gives you an endless amount of possibilities… And yet this story tells a tale of a boy who considers to give up his immortality for just one thing - the friendship of a stranger…

Sihu Choi, a 2nd year high school student, is famous in his school for 2 things: reading the morning announcements and turning down confessions indifferently.

Aeun Son, also a 2nd year, loves nothing more than to listen to Sihu's soothing voice every morning, often arriving to class late in order to hear the morning announcements in a quiet corridor.
As the new school year begins and Aeun's obsession flares once more, she makes a promise to herself that she'll become Sihu's friend at the very least.

With the help of her older sister, and the fact that they've been put into the same class, can Aeun succeed where every other girl before her has failed?

original webcomic

Miogi tries to take his life after hearing his lover is engaged.

Compilation of short stories, all but the last one are about the same couple.

• Binetsu Shuukan (Week of Mild Fever)
Wakui Satoru is a senior staff in the company who looks out for Asano Keiji. The moment he saw the handsome Wakui's naked body, Asano's heat welled up within him. The pride of someone older, the seduction of it. The heated heart that desires to monopolize... the love that wants to be stripped bare. A fever that only happens once in a lifetime. A considerate seme who is a younger salary man.

• Netsubyo (Fever)

• Netsu no Arika (Where the Heat is)

• Nettai Kajitsu (Tropical Fruits)
Wakui and Asano goes on a trip to the southern islands.

• Netsu Ai (Passionate Love)
A trip to an onsen to celebrate Asano's birthday.

• Kisu no Ame ni Utarete (Defeated in a Rain of Kisses)
Taki calls his old lover Kakeru in a drunken stupor; and Kakeru shows up at his place. Kakeru tells Taki he has an unrequited love, and Taki says he will help Kakeru. But how can Taki's heart keep up with this...?!

Hayato Igarashi has worked together in a Chinese restaurant with Shouko Mishima for a little while. As the reserved Shouko grows closer to him Hayato realizes his greatest wish is to keep her smiling. Will her tragic last relationship stop that? And what'll happen when a new guy comes to eat at the Chinese restaurant?

There's a movie with the same name that came out in 2006 featuring Koike Teppei.