Kikuchi Ayaka
Was originally a 3rd generation member in 2006, was forced to leave the group when she was caught dating a fan in 2008. Reauditioned and became a research student of the 7th generation in the same year. Promoted to Team K in 2009, climbed back to popularity and has been ranking in elections these years. In 2014, she denied a transfer to NMB48 and subsequently announced her graduation.
Akimoto Sayaka
Was embroiled in a scandal with director Oji Hiroi in 2010, who stayed overnight in her apartment. She later explained that she simply gave him a place to sleep as he had dozed off after watching a movie. She resigned as captain of Team K, but was reinstated later. She graduated from AKB48 in August 2013 and is active as an actress.
Watanabe Miyuki
Rumoured to have invited some male fans to hotel room for a dating party in 2011. Some other girls in NMB48 were involved and they were suspended. Miyuki was removed from Senbatsu for one of their singles but bounced back quickly later.
In 2014, Shunkan Bunshun exposed her sleepover with male model Fujita Tom. There was no official reply from Miyuki or her agency on this matter. She lost fan votes and dropped out of Top16 during the 6th General Elections, but returned to senbatsu in 7th General Elections.
Hirajima Natsumi, Yonezawa Rumi
Pictures of them with guys were leaked from their private Twitter accounts in early 2012. They resigned and have moved on with their solo careers. Hirajima Natsumi made a return to AKB48’s 2013 General Elections by participating as a graduated member, and managed to rank in at 62.
Sashihara Rino
Shunkan Bunshun exposed her alleged relationship with a fan. She was at the height of her popularity when this scandal occurred, and was transferred to HKT48. One year later, she placed first in the 2013 AKB48 General Elections. In 2015, netizens discovered signs of a relationship with Kis-My-Ft2 member Senga Kento.
Oba Mina & Mori Anna
Pictures of Oba Mina’s blog revealed possible evidence of underage drinking and dating. She resigned from being captain of Team 4 and went through a period of suspension. Her teammate, Mori Anna, also had an episode with an ex-boyfriend exposed. She left the group in 2011 but announced her comeback to the entertainment industry in 2013.
Masuda Yuka
Shunkan Bunshun exposed her alleged relationship with Da Pump singer ISSA in November 2012. She was caught spending the night at his place. She announced her resignation and continues to be active as an actress/singer/talent.
Minegishi Minami
Following the footsteps of Masuda Yuka, she was also caught sleeping over at idol group member Shirahama Alan’s apartment. She shaved her head in an attempt to express her remorse and was reverted to a research student. Later she was restored as captain of Team 4.
Kashiwagi Yuki
Joined a dating party with Minegishi Minami, an av star and some soccer players which lasted overnight. She explained that she thought it was going to be an all-girls party. In 2015, pictures of her with NEWS Tegoshi Yuya were published by Bunshun days after the 2015 General Elections, in which she placed 2nd. No official response was ever given.
Kasai Tomomi
Reported to have been in a relationship with a management of AKB48 for some time. The secret was exposed when paparazzi caught her entering the guy’s place after midnight and leaving the next morning. She was about to graduate anyway.
Itano Tomomi
Rumored to be in a relationship with EXILE’s vocalist Takahiro back in early 2012. They are said to be living in the same apartment building and have been spotted having dinner dates together. However, both their agencies denied their relationship and she graduated in 2013. After that, netizens spotted both of them wearing Cartier love bracelets on various TV shows. However, they “broke up” after Takahiro was rumored with Takei Emi.
Miyazawa Sae
Rumored to be in a relationship with Johnny’s Fukusawa Tatsuya(from unit Snow Man) because paparazzi caught the guy staying overnight at her family home. Both sides’ agencies have denied their relationship, and reasons like Fukusawa is a friend of Sae’s brother was given.
Yamamoto Sayaka
Reported to be in a relationship with ONE OK ROCK vocalist Takahiro. She denied the rumors on her blog, saying she’s never met Takahiro.
Kito Momona
Identified to be the girl kissing Johnny’s Tegoshi after a drinking party late at night. Incident died away and she eventually graduated from SKE48 in 2014.
Murashige Anna
In mid 2014, paparazzi caught her sneaking out of her hotel after curfew hours to join Johnny’s Junior Abe Aran for a midnight walk, which lasted till 3am. No explanations were given although she had initially posted a SNS message apologising to fans. The message was later deleted.
Murashige was dropped from HKT48’s 4th single lineup in Aug 2014 and fell out of Sousenkyo in 2015.
Shimazaki Haruka
Not really a scandal but she was captured interacting with Johnny’s Junior member Yasui Kentaro on her instagram account. Deleted all posts from her IG the next day and kept it on private mode.
Takajo Aki
Bunshun discovered her sleepover date at J-league soccer coach’s house. No official response from management.
Kinoshita Haruka
Embroiled in an extramarital affair with CEO some 10+ years older than her. No response from management.
AllThingsJpop 
I think Maeda Atsuko had this kind of scandal, a few days before she left the group.
Hi, you must be referring to the scandal with sato takeru? I didn’t include because it happened after her graduation.
I never liked then anyway.
I thought Aki-P reinstated Sayaka back as Team K captain to congratulate her for finishing the Tokyo Marathon.
Despite the scandal, Sashihara Rino placed first during this year’s AKb48 elections.
just give it the rest. who cares about scandal? i like the music and without them, life is not fun without their music
Come on, it’s more fun with a bit of scandal every now and then!
As long as it’s not REAL scandal, like having an affair with a married man or something. I despise anything like that which causes unhappiness to others (wife, kids, etc.).
Sae Chan was/is still living with her parents so there was no boyfriend to begin with
Why don’t you research the subject better
Tomochin graduated from AKB48 in 2013 so anything after that is means nothing
What do you mean? I know she’s graduated but a rumor that stretches on for years means something. It may be of insignificance to some people but also meaningful for some who used to believe rumors were just rumors.
I personally feel the only one who did something wrong was Mina Oba with her underage drinking…I like her anyway; but, that is probably not the best thing to do if you are supposed to be a good influence to people.
Minami (Minegishi) did nothing wrong, she just wanted love–I think she was 20 at the time. Any fan who really thinks they will get to marry any of these girls one day is living in a wild dream–they want the guys from Exile or other popular J-groups, not the dude who lives in his parents basement, works at Lawson or even a pencil pusher.
I’d rather like them for who they are; are they honestly kind, do they really care about their fans, do they care about some kind of cause to better the world? How about, do they care about each other, even if they are in competition with each other?
I’ve read that Kasai bullied Rino–calling her ugly and such…that is a disappointment; THAT, is a scandal.
…the only reason I can believe that the bullying is real is because Bunshun can either retract the comment or get sued by Tomo, Rino and Itano for false information; and I never read that either had happened. Frankly, I really like all 3 and I don’t want to hear that Rino was bullied, she has enough problems with her social anxiety–one of the reasons she kept herself buried in headphones all the time, so she didn’t have to hear the outside world. I like to see her kindness towards the juniors, she makes a good big sister.
Anyhow, that is just how I feel.
The real scandal is why the same girls are the senbatsu of all the albums when there are a few hundred others who are just as talented…Chance No Junban changed history–Mayumi’s luck threw “Queen” Atsu in the back for one album…scandal, scandal everywhere, scandal, scandal…I don’t care! LOL!!!
Ummm if celeb sue every tabloid rumors they would be in court 90% of the time. They don’t have to sue them bc people don’t take tabloid rumors seriously, unless there are pics or audio recording.
People like comedians joked that sashi’s ugly all the time on varieties tho like “you don’t look like an idol” etc It’s a gag that Sashi know it’s not taken seriously. Her comedian chara in earlier yrs was a punching bag…which sounds worst but it’s generally people teasing sashi and sashi laugh it off or make jokes back and isn’t uncommon in japanese variety
‘ Any fan who really thinks they will get to marry any of these girls one day is living in a wild dream–they want the guys from Exile or other popular J-groups, not the dude who lives in his parents basement, works at Lawson or even a pencil pusher’
lol,truth hurts.obviously they can demand for a successful good looking dude
hey do you know the keyakizaka46 scandal. this is all i know of that.
http://aramajapan.com/news/gossip/underage-keyakizaka46-member-harada-mayu-revealed-to-be-dating-her-former-teacher/51852/
http://aramajapan.com/news/harada-mayu-quits-keyakizaka46-before-debut-in-light-of-underage-dating-scandal/52075/
I know about it..just didn’t post it as it’s technically a 46Group news.
I think Emi Takei stole Tomomi Itano’s bf…
Asia’s Kinkiest Blacked