In the second part of the series, while i was reading them, it felt like kayanomi* instead due to them being drinking related. Also the series of letters shows her growing interest in alcohol from the start of year to becoming a full fledged drinker by the end. Perhaps this was the catalyst for kayanomi?
In any case, enjoy the scans 🙂
Part 1 can be found here for those who missed it.
*Kayanomi is a regular drinking programme hosted by Kayano Ai which you can find on YouTube.
P.S special thanks to pyrite for the QC!
You can purchase this e-copy of Kayano Ai’s [Letters] at Amazon. As for the physical copy, your best bet are physical stores in Japan since this photobook was released in 2014.