So now the next chapter will determine if we'll have this one character looking for this other character probably from different dimentions while getting chased by a giant bullet or different plots but are all connected due to that giant bullet.
Although chapter 1 didn't get posted to MangaDex until about two years ago, its scanlation was effected more than five years ago. So, while chapter 3 may come soon, the probability of that is much less than might otherwise be thought.