Another 1 page per day manga by Shouma Keito. Published on Twitter 4-koma, which determines continuation of serializations by number of twitter likes/retweets.

Links:
Twitter: https://twitter.com/shoma_keito

Yes it is.

Raws: http://seiga.nicovideo.jp/comic/43318

One day, 25-year-old Hajima Kanade wakes up to find himself in a child's body. While his live-in lover Kawata Yuuki freaks out, Kanade tries to take it as calmly as possible. Before they are able to figure out what to do, Yuuki's younger brother knocks on their door. Will Kanade be able to keep his cool?

Two people that live their lives however they want to, but need each other to survive.

Mitsu has always been looked upon by men as the Dolis--the ideal girl, the eternal partner in any man's dream, the perfect lover... When Kishi falls head-over-heels in love with Mitsu, he soon discovers another side to this seemingly flawless woman. As the drama and romance between Mitsu and Kishi unfold, they take an extraordinary excursion into uncharted arena where love and desire confront hope and survival.

From Aerandria Scans:
It's the 1920s and Mariko, age 16, is married to a man 30 years her senior. She is honestly happy to be his wife and really excited to board the Orient express in Turkey on their honeymoon trip. But her life takes a rapid turn when her husband is discovered dead after the first night on board... And that's only the start of Mariko's great adventure.

The male and female leads, college students, are neighbors.

Even though they live right next to each other, they don't encounter each other.

But gradually, they acknowledge the other's existence, and fall for each other.

From MangaProject:
Karigari Hiroshi is a total robotics geek/genius who really likes this one girl, Marie. He's too shy to ask her out, so he becomes obsessed with creating a perfect android copy of Marie. He succeeds perfectly in creating Marie, an android with the intelligence and heart/emotions of a human and who looks just like Mari (though with different colored hair). Of course, Karigari never really considered the implications of such a thing.

Bookstore owner, Otani Mitsunobu, is a scary man. That is, to the people of the Komacchi Shopping District. Then one day...

[Please adopt me]

He ends up taking care of a child that came from heaven and was sent by God?! And why is everyone suddenly not scared of him anymore?

An adaption of the Star Wars Rebels animated TV show

A long time ago, in a galaxy far, far away. A once peaceful galaxy now lies under Imperial rule. On the planet Lothal, the path of a boy named Ezra crosses with the paths of 5 rebels who seek to resist the Empire. As if guided by fate, he joins the crew of the Ghost.

If I just put whatever here, will the bots just copy it?

"Forever and ever, be by my side, and protect me"

Takanose Miwa, Highschool freshman, is a pretty but clumsy girl who loves manga more than the real world. Her love is on the level that she almost have no care about the real world, like doesn't know about rumors and doesn't believe at romance in real world. She met with Nakajou Kiriatsu, an ikemen who looks like the lead male of her favorite manga. Kiriatsu is popular because he is nonchalant, cool and hard to read, though actually he is just a natural airhead. As Miwa is at risk getting bullied by a certain bad guy, Kiriatsu decided to protect her.

Hana is a high schooler who ends up replacing her big sister at a marriage interview. Little does she expect that the potential groom, a handsome 26-year-old businessman named Takane, immediately insults her and calls her a gold digger! Furious, Hana throws her wig in his face and leaves.

Against all odds the two end up going on dates on a regular basis. Takane is a rich kid who's much more immature and inexperienced than his good looks and flashy manners suggest, so they find it easy to forget that their ages are ten years apart. But how will these two ever find love when they're so busy teasing each other?

Note: The title is a pun on the main character's names (Takane and Hana) and the phrase "takane no hana " (lit. flower on a high cliff; meaning something unreachable, out of your league).

From Aerandria Scans:

It’s the middle of the Meiji Era and our heroine, little Suzu, is sold to the red lights district. However, the rich heir of a dry goods store, Tsugaru, buys her freedom for no apparent reason. She is deeply grateful for being saved, but she doesn’t understand why he paid so much money for her and the only explanation he offers is “we have a bond.”

She tries to unravel the mystery of his feelings and gradually grows from a little girl to a young woman, always by his side. A gentle and slow-paced love story set in the Meiji Era.

First confession in life. but to see the face only a moment after confession!? calm and deep love story is about to begin. - Nanoka's friends are only interested in boys, leaving Nanoka feeling alone and left out. The truth is, she had a boyfriend before, but was left so heartbroken by his lies that she's not interested in dating anymore. That's what she thought, until an overheard conversation moves her so much that she ends up suddenly confessing to a boy that she's never even seen!

Science fiction manga series about the discovery of a gateway in time and space deep underwater which allows for travel between the present day and the age of the dinosaurs.

All of a sudden, out of nowhere.
“Renya Kunugi, you have passed away!”
So said the young girl who styled herself God.
Apparently, Renya Kunugi the Protagonist had lived long and prospered. His life already came to a peaceful and fulfilling end, but at the request of Her Holiness, he was transported to an alternate world to start a new life as a young man.
Thus did Renya, who was definitely your average everyday guy, end up fighting off bandits and vanquishing monsters. Eventually, after his successively blossoming talents coalesce into a force of sheer awesomeness, he will go on to leave his mark upon this alternate world.

A pervert with great martial arts skills, a klutz of a nun, a dojo master with a bombastic imagination, a volatile code of chivalry, a mentally unstable patient who flippantly gives out internal energy… and so many experts who’re castrated? Hehe—So this is murim?!

Yamada Masami leads a double life. During the day, she's an ordinary student in Tokyo with glasses and pigtail braids. At night, she dresses herself up and becomes the glamorous call girl Miyabi. She doesn't just do it for the money; she loves the pleasure and happiness she can bring to her customers.
It seems like this double life can't last forever, though. Her chubby friend Aki, who spends her time desperately dieting in order to attract a man, doesn't understand why Masami is so opposed to getting a boyfriend. Her other classmates, the perverted Kaneko and the rich Sasaki Kaori, have opposing views of the acceptability of the pleasure industries. What will happen if the people who know Masami during the day discover the secret existence of the lovely Miyabi?

From Evil Flowers:

Fukka, the daughter of the Inuiyama's lord, is determinate to do everything to help her father win the war and get him home safely. Because she's a girl she's not allowed to go to the battle field with him, but she hears that a certain "war ghost" called Byakkimaru has been seen near her town. The legend says that if you get Byakkimaru to join your side you will win the war. The little princess starts a trip in search of this ghost determined to save her clan.

La historia se centra en Himari Kohanai, una estudiante de 15 años que odia ser torpe. Quiere pasar página en la preparatoria, pero es un desastre, sin embargo, y a pesar de todo, Himari hará cualquier cosa para acercarse a la persona que admira. Aunque sea meterse en un mundo totalmente desconocido... Una historia donde poco a poco nuestra personaje principal crecerá para alcanzar su meta.

(google translate of above with minor editing for gender): The story centers on Himari Kohanai, a 15-year-old student who hates being clumsy. She wants to make her page in high school, but it's a mess, though, and yet Himari will do anything to get close to the person she admires. Even if it's getting into a totally unknown world... A story where little by little our main character will grow to reach her goal.

Urashima Eiji, a college student, goes to sleep after a fun drinking night with his friends. When he wakes up he discovers a beautiful girl next to him who treats him as if they are in a loving relationship. Later, Eiji finds out that 3 days have passed since he went out with his crew. What did he do during all that time and why does he have no memory of it? By confronting that reality, he will be caught in tragedy...