The "bittersweet, mysterious story" revolves around Chocolat Aikawa, a chocolatière who runs a shop called Chocolat Noir. She can grant wishes to the troubled people who visit her shop -- if they give her something precious in exchange.

In the Chocolat no Mahou (The Magic of Chocolate) series:

V.01 - Chocolat no Mahou
V.02 - Bittersweet
V.03 - Creamy Sugar
V.04 - Dark Spice
V.05 - Evil Essence
V.06 - Fruity Flavor
V.07 - Guilty Crunch
V.08 - Honey Blood
V.09 - Ice Shadow
V.10 - Jewel Syrup
V.11 - Knocking Egg
V.12 - Love Flake
V.13 - Melty Night
V.14 - Nutty Carnival

Hikaru Nakamura author of "Saint Young Men" and "Arakawa Under the Bridge" begins a new series for the first time in 10 years! The Black Santa Claus is looking for staff for his "Black Enterprise"!!

“Classes” are given at the age of 10, and the presence or absence of “skills” greatly affect life. Arel, the son of “Sword Princess” Fara and “Magic King” Leon, has been branded as “Classless”... But even without a job or skills, Arel believes he can persevere through effort.

I reincarnated into the world of an otome game as the villainess, “Ophelia.” I thought I'd be able to enjoy a peaceful school life, but to my dismay, I found myself subjected to constant harassment at the hands of the wicked, vindictive heroine; and to top it all off, I’m plunging headlong into the dreaded Bad Ending — hold up, as if I’d meekly submit to such a fate! If that’s how it’s going to be, I’ll tap into the top secret "cheats" known only to those who've played the game and carve out the 'Villainess Route' of my fantasies!! But for some unfathomable reason, the capture targets seem to be doting on me far more aggressively than in the original story…?
Original Web Novel: https://ncode.syosetu.com/n0411fu/

After the meteorite "Artemis" collapses on the moon, an unidentified phenomenon affects humans: the "Reproductive system disease". 12 years passed and mankind has done research in the field of cloning and immortality in this world where the birth rate is 0. Meanwhile, Ashiro Koshiro is still seeking the cause of this disease, and suddenly a woman appears and gives him a mysterious suitcase.

The latest work from the "My Dearest Self With Malice Aforethought" duo, a blockbuster crime suspense series that has sold over 1 million copies!

Detective Saeki Jin of the Tomizayama South Police Station receives a report of a burglary and heads for a mansion that stands tall on a mountain. However, as he proceeds with his investigation, he discovers a shocking fact. A shiver runs through the investigators...! A noir suspense of passion and lamentation, depicting a detective confronting a bloody madness, is about to begin!

Florentia was reincarnated as the illegitimate child of the richest family in the empire.

She had thought that everything would go well in the future.

But her father had passed away, her relatives left her at the doorsteps, and the honourable family she was so proud of was completely ruined…

But is this real?

She drank a little (a lot) and was hit by a carriage, when she opened her eyes again, she was seven years old?

Moreover, the Second Prince, who was the enemy of her family in her previous life is following her around like a dog!

“Tia, you’re prettier than me.”
“…Are you kidding me right now?”
“No. I mean it.”

Alright, both the Second Prince and the family are mine!

In this life, I’ll have to become the head of the family.

***“Huh? Who are you calling loser?”***

As the background of the class, I, Kazuhiko Nukumizu, witnessed a popular girl–Anna Yanami, getting rejected by another guy.

“Even though he said we’ll get married. Don’t you think he’s pretty mean?”
“When did he say that?”
“When we were 4 or 5 years old.”

That doesn’t count, right? With this, the losing heroines like Remon Yakishio from the Track and Field Club, and Chika Komari, from the literature club.

“Nukumizu-kun. There are two types of girls. Childhood friends or cheating cats.”
“I see. Well, that’s a bold statement.”

There’s a fortune for those who shine only after losing. Losing Heroines—The curtain to the mysterious coming-of-age story “Makeine” opens now!

"Won't I be able to get filthy rich if I use this skill?"

Continually exploited at work, Amata Shirou quits his job and moves to his grandma's house. When he finds out that it's connected to another world, he comes up with a plan to set up a business selling Japanese goods.

The story of a man getting rich using his skill that converts the currency of the other world to Japanese yen and so forth.

Web Novel RAW: https://ncode.syosetu.com/n4097fo/

Vino, a member of the A-class adventurer party "Assault," is a potion user, the weakest and lowest level job.

He meets a beautiful swordsman named Canadia, who is known as the God of Death.
He was kicked out of the party and nearly died in a monster attack, but Vino awakened by chance with the single-minded desire to protect her!

He discovered his own strong shoulders and a new way to use potions, even throwing potions to blast monsters to pieces.

Then their adventure began, but at the same time Canadia started to run amok!

An adventure tale with the strongest pushover wife, it begins!

Kikuri Hiroi (25 years old). She is a "genius bassist" who leads the indie band "SICK HACK", and she loves alcohol. She often gets drunk and breaks the equipment of the live house, so she seems to be short of money. She lives in a 52-year-old apartment without a bath, and sometimes borrows showers from her friends and acquaintances. She is regularly attacked by anxiety about her future, which she counters with a "happiness spiral" with the help of alcohol. What is her daily life like...?!

Yano Maya, an office worker tired of work and seeking healing, met a naïve and weak God “Rinjin-chan.” This is her daily life with a God, being gently swung around and healed.

Note: 'Rinjin' is a pun on '隣人' (neighbor), replacing the kanji for 'person/人' with 'god/神'.

Chiaki Honda is a middle-school boy who neglects his studies. Furthermore, he smokes, and has dyed his hair a bright green. One evening at the arcade, a girl challenges him to a match. The girl, who straightforwardly introduces herself as Nanako Kikuchi, suggests a bet, nonchalantly wagering her body for Chiaki's watch. Chiaki is soundly defeated, and he goes home fuming.

His life goes on, of course. The next day, he meets a strange young man on the train who looks an awful lot like him. And eventually he runs into Nanako again.

Osamu, a young man who died at a young age due to an incurable illness. His second life was to drift as a "spirit (demon)" in an unknown world! Osamu, who is hated by humans and unreasonably deprived of his "life," hopes that he "does not want to die anymore." At that time, he gained the power of "life-sucking" that feeds on the vitality of others. In addition, he will resist the approaching "death" by using the science that he continued to learn on the bed in the previous life and the creative magic that makes the best use of his own dexterity. I met an immortal girl who was despaired by being tossed with life like myself, "--You tried to kill me, you guys are bad." In order to live, we are leaning toward the "stealing side" ...? An anti-heroic fantasy where a ghost who wants to live and a girl who can't die conflict with the world!

Web novel: https://ncode.syosetu.com/n4532en/

The Osoguruma and Shinma clans are ninja organizations living in the modern age. They were called "super ninja," or "super shinobi." However, these two clans have been fighting a fierce battle to exterminate each other. Why?

The unique tag team of Tetsu Kariya and Kazuhiko Shimamoto unleash a painful work!

When Lord El-Melloi II, the later Waver Velvet, gets asked to claim his inheritance over Adra Castle, he travels there with his apprentice Gray to do so. But they are not the only ones called that way. The will of the previous owner states that the assembled contestants - including Luviagelita Edelfelt - must compete in a game of wits to win the castle.

The protagonist, Inaka Yuuji, was ran over by a truck because his awareness was dulled from overworking.

“Ahー, with this I don’t have to work so much anymore. I want to spend my next life leisurely……” was the wish Yuuji blurted out, He met God and it was decided he will be reincarnated in the countryside of the otherworld. He became Alfred Slowlet, 2nd son of a countryside noble, will he be able to enjoy and leisurely spend his slow life in the countryside?

Professor Noah Minami Umberbach is not your average archeologist! For one, he's prone to whipping out his gun and blowing up stuff to make dramatic entrances. But that's just his eccentric nature and he's a man on a mission. A mission that may very well be the most important mission of all time. And he's dragging unlucky student, Kotobuki, along for the ride!

Masaichi Mazono, an otaku boy, and Toiro Kurumi, the most beautiful girl in school, are childhood friends.
Toiro, who was always in Masaichi’s room, was supposed to be like family to him.
But one day, Toiro, who was constantly getting annoyed by her romantic troubles, asks Masaichi to play the role of her boyfriend.
They thought it would be simple to pretend to be a couple because they’d been together for so long, but their ideal childhood friend can’t possibly end up as a false lover…
“E-eh no, holding hands is embarrassing.”
A childhood friend who is more than a lover embarks on a more adventurous lover’s life than she could have dreamed!

College student Seiji Kitou and his friends go to an abandoned building as a test of courage, and meet an attractive woman who is a monster that swiftly kills and eats people as soon as she meets them. While trying to escape, Seiji is saved by a mysterious woman with the same ability, Kiri.