Is there even enough content for a 12 episode series??

There are currently 387 chapters of the webnovel, and it's still ongoing, so there's enough content to fill so many seasons.

I doubt it'll ever get them though.

The real question is, can they get far enough in a 12 episode season for it to end on a satisfying note?

I read page 1 and thought “man someone should write a yuri story where they’re anonymous pen pals and they exchange letters through some weird way like leaving them somewhere, like some message-in-a-bottle-type shit, but then surprise twist there’s time travel involved and they’re actually separated by 100 years! That would be cool, too bad this manga won’t be that.” Then I saw the letter fall out of the 100 year old book and I was like “wait” and then the author of the letter used some awkward wording to refer to the time period in which the book was written that seemed to be deliberately avoiding implying whether the writer considered it to be the past or the present and I was like “hm” and then there was the scene where the MC’s friend complains about “not knowing the future” while otherwise being irrelevant to the pen-pal plot and I was like “hm!” and then the author straight up made the message-in-a-bottle comparison directly, complete with illustration, and I was like “I see”

And then I finished chapter 2 and I was like “oh.”

…but what if?

On the chance you're not already familiar with it, you should check out This Is How You Lose The Time War.