It's Two Sides Vol 1:A Sokai & Rokunami zine.

It's TRAPPIST-1 Parallel Universe. The author was あね/ココアナナあねス(https://www.pixiv.net/en/users/45677943)

It's 君としあわせな最期. It is a Hanako/Nene doujinshi. The artist was Merry-passing(https://www.pixiv.net/en/users/39132928)

©repth