If you're looking for manga similar to Where a Person is Most Vulnerable, you might like these titles.
The person that recently sparks the interest of Seiji Aizawa is the beautiful warrior-like Rin Ugouda, a graduate student from Seiji's university who lives next door. With his happy-go-lucky manner, Seiji somewhat got acquainted with him, but one day Rin was suddenly coming out as a gay, even leaving Seiji with an unforgettable fierce kiss!
About the relationship between a high school boy Kota and his cool hottie neighbor, Sho.
Tomo is madly in love with "Sakura," a character from a love simulation game. Then, one day, he finds out that the guy who moved in next door to him, Chihiro, looks just like her. Tomo's desire was for his first time to be with Sakura, but when he comes face-to-face with Chihiro, the combination of Chihiro's desperate advances along with his enchanting looks makes Tomo quickly change his mind about that. Chihiro has strange tastes and smokes completely naked, so he's nothing like the sweet and innocent Sakura... But with Tomo being completely new to pleasures of the flesh, he can't keep his mind off of Chihiro! And, to top it off, Chihiro's ex-boyfriend makes an unannounced visit! What will they do!?
Daichi, a University student, who can’t get used to the city life, has a problem. And that is, his beautiful next-door neighbour, Kikuchi, who loves bringing men home till morning. Even though Kikuchi always attracts jerks… Daichi didn’t know that he would fall in love with someone like him.
Masaru is a hoodlum with a big heart, but he's not so sharp when it comes to school. Yu, his next-door neighbor, agrees to tutor him. Yu marvels at his pupil's foolish antics, but when Masaru falls asleep, Yu can't help but reach out and…
Kumasawa is a taciturn mechanic whose neighbor is Kouichi, a Youtuber who gives love advice. Kouichi is as friendly as a Shiba dog, and he entered the heart of tough-looking Kumasawa at an explosive speed, becoming an existence that invites Kumasawa unconsciously. At this rate, Kumasawa's common sense is about to be burnt out by Kouichi's unconscious natural recklessness...?!
Nakai, an auditor from an insurance company, is already used to being glared at by the people from his line of work, so when his neighbor happily smiled at him, he's surprised and glad. But that did not last for too long when it turned out that his neighbor Takahashi is the assigned salesperson he need to deal with because there's a problem regarding to the client, and moreover, Takahashi hates auditors like Nakai. What will happen to this neighbors whose jobs are like water and oil?
He moved here 8 years ago. Rui was adopted because of his abusive mother. He got attached to me, his next door neighbor, Yahiro. But now his new mother is pregnant.
Go to work, go home. Go to work, go home. That's the daily routine of 26-year-old Wataru Toyohashi. One night, he heard a terrible groan coming from next door, so he rushed over, only to find his neighbor, Takatsuki, on the verge of tears and slumped on the floor. The reason? Hunger. Takatsuki said he forgets to eat when he gets caught up in his work, which he does from home. Toyohashi, unable to ignore the situation, decided to treat Takatsuki to dinner since he was in the middle of cooking anyway. Overjoyed by the simple home-cooked meal, Takatsuki exclaimed, “I want to eat this everyday!” And that's how their weekly weekend dinner parties started.
Though you act cold and unfeeling… I know just how cute you are. After being transferred back to the branch office in his hometown, Shinokawa coincidentally ends up being next-door neighbors with Kaede, the boy he adored during his student days. One day, a drunk Kaede reveals that he enjoys taking it up the ass…?!