Naanya announced her graduation today.
http://streamable.com/i56k
AKB48「僕の太陽」公演11月29日にて
大和田南那
「私からひとつ皆さんに伝えたいことがあります。
わたし、大和田南那はAKB48を卒業します。
私はですね・・・AKBに入って約4年目なんですけど、ここでいろんな悔しかったりうれしかったり、いろんな感情を教えてもらったり、いろんな経験をさせてもらったので、これからグループの外に出て新しい自分を見つけたいなと思っているので、はい、決断しました。
まだ日程とかは決まってないので、まだアイドルとしての”なーにゃ”を皆さんに見てもらいたいなと思っているので、これからもよろしくお願いします。突然すいません、ありがとうございました」
Much have changed with her over time.
Once pushed as a double-ace with Miion, PV-debut as center in "Party is over", to pushed on her own but less than Miion, but still receiving opportunities on TV shows and similar, and then eventually just less and less. After her scandal she was removed from AKBINGO! and that was it.
I should also add, that in addition to more "official" stuff, there was also behind the curtains stuff going on.
Post-scandal, Naanya not being invited to a 15th gen Halloween party for example (not being part of the good company), Naanya unfollowing Miion on Twitter (Miion still following Naanya though), Naanya with various comments on Twitter, etc... Also just to add, out of all the 15th gen girls Naanya is only following three: Miyabi, Megutan, and Makichan - whereas only two are following Naanya on Twitter: Seichan and Miion.
In addition she started gaining weight (been an issue for a long time) - though nothing "bad" per se - and that is also something that's never popular in Japan. Her handshake events have been less than stellar whereas other girls in her generation like Miion, Komiharu, or Seichan for example have great handshake events in comparison. Her performances haven't really been amazing either...
Her attitude also changed, and she got much more moody, lackadaisical, and salty. So I think it's a combination of several factors, but the scandal and member-relationships probably enough to make her graduate.