I think it’s likely to be another installment of the Love Song series. I bet that Maeda again wants to make songs for one of the female singers on a recent Key project (ikely Rionos). On the other hand, the aesthetics look like a Shinji Orito album cover too, so I wouldn’t be surprised if that were the case. I wouldn’t be surprised if it was an album for Runa Mizutani since he loves working with her. In a possible other scenario, it could be an important Lia album or an important remix/collection album.
I think that it could be an anime adaption. Takahiro Baba has been networking this decade, even being able to pull off adapting titles like Planetarian and Kud Wafter which weren’t in-demand. Imagine that power for something that is still fresh. I think that Summer Pockets might be getting one in 2021. I think the 2020 date is for a teaser/trailer/announcement.
I think that it’s too soon for another kinetic novel. There was a 12 year gap between Planetarian and Harmonia, and Harmonia was made for their 15th anniversary. I think that it might just be another mainstream title. Key did release Kanon and Air only a year apart, and Clannad was originally planned to be released 2 years after Air. Also, I don’t think they’re going to do something as big as Clannad, Little Busters, and Rewrite for a while either so that shortens the time. Plus, without a main-writer and new character designers, it does seem quite possible for it to work. It could (unlikely but possibly) be the 2nd beat too. Maeda isn’t doing anything major as far as announcements go, and I feel like the teaser picture looks a bit too dark for it to be original.
I think that the 3 locked images could either be
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Harmonia anime announcement - I think that since Planetarian became successful and David Production and Key have been creating new releases for it (ONA series, movie, VR, HD release, OVA’s), it would make sense that they would try to do Harmonia next and start it up.
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Maeda’s Key x P.A. Works 3rd original collaboration - Since Angel Beats was in 2010 and Charlotte in 2015, it would make sense that if a 3rd collaboration happened, it’d be in 2020.
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KSL 2020/a Key concert (like the Key Orchestra) celebrating Key’s entirety for the new age
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A new Key-Island event
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Harmonia Light Novel/Drama CD’s
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Live-action adaption
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Summer Pockets 18+ Edition
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Angel Beats 1st beat 18+ Edition
And in the fun percentage of 0.01%,
I also hope Tomoyo After is there somewhere or a Rewrite remake. 4 years later like Kanon for Rewrite in 2020.
And I don’t think that any of the unlocked ones are any of the presumed English releases. This is for the Japanese audience for the most part, and if they did, Rewrite would have been on there. I don’t think it has to do with Console Switch’s or mobile games either.