try the puffin browser
.........internet
I think they did not have episode 4.
You would go to the Sora website in order to read or find information about the Japanese Manga series Aki-Sora which is written and illustrated by Masahiro Itosugi. There are many volumes available as well as links so other Manga series.
You can find Aki-Sora manga in bookstores, online retailers like Amazon, or through digital manga platforms like ComiXology or Crunchyroll. Make sure to check the availability and pricing before purchasing.
It's already dropped in Japan (I think that Ch. 26 is the most current), but the English-American ones might not be deseminated because of the violence/ecchi ban in Tokyo (where Pony. the publishers/serializers of Aki-Sora, are located). You may want to use a scanned copy online, not that I condone scans, and just deal with the Engrish a lot of typesetters spew out, or alternatively, you could learn Japanese like I did :)
Angel Beats is finished, there are 13 episodes (English and Japanese) And an OVA (Also in English and Japanese) Hope this helps :)
aki means autumn
Angela Aki's birth name is Kiyomi Aki.
Aki Eronen's birth name is Aki Kristian Eronen.
Aki Raiskio's birth name is Aki Lauri Raiskio.
Aki Nawaz's birth name is Aki Nawaz Qureishi.
Aki Hakala's birth name is Aki Markus Hakala.