I wonder if the manga author will kill of Alan for good at one point, or if they miraculously find a cure.
Honestly some part of me still consider the ' this is actually far, far in the past, and bugs are actually from this planet looking to get latest empire tech in hope of curing Alan' twist take on 40k God Emperor
Like imagine if eventually Alan just stop waking up but is still alive, the starvek empire conquer the whole planet then the story shift with Cleria and Iris slowly drifting apart in their approach to save him.
Iris try to cultivate human race in different environments in hope that some will develop into gaining resistance/immunity to Alan's 'cancer'
Cleria fall in with the 'goddess' and send out people turned bugs to seek out the not-cancered samples of galactic empire's DNA as well as new machine parts to replace the aging ones on starvek.