Blue Drop is near to end and each episode let more and more questions with no answer.
Spoiler for The two final episodes will answer this?:
1) Why Hagino attack Mari at first episode?
2) What Onomil discovered about Blue?
3) Onomil is a ghost now... Err Hã?
4) The Blue Squadron is a beta tester?
5) All people in island was killed in two ways, much as murdered (needs explanation) and other was by a tsumani (needs more explanation)