From Mangadex: Spin-off from History's Strongest Disciple Kenichi. Note: Only read this manga once you're up to at least chapter 313 of Kenichi main series. Released at the same time as Kenichi volume 48 (containing chapters 448-457), Kenichi Plus is a collection of three short stories that will take us back in time… The first story features Tanimoto, as he kindly reminisces his memories of Kano Shou, from the first time he met him, up until Kano Shou last fight… In the second story, we follow Loki and No.20 adventures, as they start and struggle to run their detective agency. But that's when Niijima shows up with a request that fit them perfectly. For the final story, which features Renka, we will follow Pisuke's story, a bird who lived many adventures before ending up as Renka's pet

When Konoe Moyako and her little brother Akira were young, he said he wanted to marry her. Naturally, Moyako decided that her little brother was a complete pervert who was obsessed with her. Now that they're both teenagers, Moyako is convinced that she needs to "rehabilitate" him; however, it seems that the "perversion" is entirely in her imagination, and she can't seem to help turning completely innocent situations into creepy ones in her mind!

Yasaka Tokiwa lives in an unusual time, and according to his dreams, it's about to become even stranger. He's been having a dream of a woman called Ri'in ever since the robot, who he calls Makina, came to his home. He and Makina attend the same school, where their other classmates include a secret ninja (Kusanagi Kanata) and a sorcerer (Yata Haruka). When Tokiwa, the robot, the ninja, and the sorcerer rush to rescue the student council president from a demon, the boys find that they've all been having the same dream! What is going to happen to their world? (Source: MangaHelpers)

An all-boys school is good—— Since being recruited into the Student Council by Sawane, we continued our relationship of friends with benefits. Is this taboo? Or is it immoral? Regardless, I don’t care, because I love Sawane. I have Sawane, and aside from me, Sawane doesn’t…… Our distance is far, yet close, so this narrow area here at the school, is perfect for us. (Source: Shogakukan, translated)

Toshi is your regular senior high student, except in the evenings when he's a bartender at a joint frequented by American servicemen, where he deals drugs, pimps, and even cross-dresses a little on the side. And his best friend Miyuki just happens to be the son of a loan shark with gay tendencies. If this sounds like the hard-boiled world of Yoshida's later and most well-known work Banana Fish, it's balanced by Toshi's madcap adventures at his all-male school (where his mates jerk off to everything in sight, and scenes from shoujo manga are performed in all their histrionic glory), as well as the unexpected delicacy of his relationships with the women in his life. This episodic drama is bursting with all the frustration, the tenderness, the audacity, the horniness and the hilarity that comes with being young and male. All the tough, silly, dirty, and sweet things boys get up to in the locker room and out of it never brought a bigger smile to your face.

Note: The title is a play on the word Kakurenbo - かくれんぼ "hide and seek", except the last part is replace with renbo - 恋慕 "(falling in) love; attachment".

Boy falls in love with a girl, the boy can't get the nerve to tell girl, classified government love-helper android is randomly sent to boy, android helps boy land girl. Fanservice ensues. (Source: SnoopyCool)

Sou Kagura is enjoying his life as a new high school student until one day when his parents abandon him due to a large debt they had amassed. To get rid of their debt, they essentially sell him to Mikoto Ouzuki, a wealthy land developer who wants Sou as his sexual pet. However, Sou's older sister Ui intervenes with a proposal: If Sou can pay back the debt in one year, he's off the hook, to which Ouzuki agrees. What Sou only finds out later on is that Ui's plan is to open up a maid cafe with him as one of the maids under the name "Kanade".

One day, out of the blue, An emotional god appears in front of you, offering a special ability... Will you use the ability to dispel evil and become a force for good? Or will the blessing turn into a curse? It would surely be up to you. (Source: Gekkan Sunday, translated)

Fujido Oriko is the buxom young head of the Fujido Zaibatsu, a group that has a monopoly on Japan's vending machine industry. And serving at her side is her personal butler, the eccentric Dr. Sebastion. When a monster suddenly attacks the city, Dr. Sebastion slips his ojou-sama an experimental energy drink his team in R&D has been developing. As a result, she quickly finds herself growing into a giantess, matching the attacking kaiju in size! Will she be able to stop his rampage, or at the very least, keep her dignity intact?

After being awarded the Nobel Prize, child prodigy Alice T.P. Riida runs away from home and creates the first Artificial Human, Ninomae Shii. Along with Shiratori Jiyun and Kurosaki Yaoki, Shii now struggles to find out for what reason he was made for.

Billionaire Tono Ryuichi, the President of Tono Foods Group, a giant food company, recently acquired two young female assassins from the Mexican cartel. Sui and Ai came from unimaginably poor childhoods and was given a choice between killing people or selling their body. They chose the former and went through an inconceivably extreme training and, at 17 years old, they have become one of the deadliest assassins in the world. They are absolutely obedient to their master and they are given the task of finding the killer that poisoned Ryuichi’s wife and child. They begin attending high school to blend into society and, at the same time, read and study which helps them become even more deadlier on the field. Sui and Ai encounter Matoba Imari who is a high school assassin herself and may be more skilled than both of them. But unlike the two, Imari just wants to lead a normal life. Whatever Imari wishes for her life is not their problem because the only thing Sui and Ai feeds on are bloodthirst and a challenge. (Source: MangaHelpers)