Interesting chapter, but I feel as if the bulk of the conversation in this chapter was Shigeru

Weird feeling, also, was there any need to call in a freaking helicopter to save Shigeru

Unless the relatives tend to be overly extravagant like that (I can see this being something down along the line)
Sei's mom's tears.....makes me think that she might be sad at Shigeru's current fate, since she might have to try harder next time to kill him, that or she's genuinely sad at his current state (If this really is dissociative identity disorder, her good side might be the one in command now). Hoping it's the first one though, I feel as if that will fit into the tone of this manga more.
Hopefully Shigeru turns over a new leaf after this in the event that he survives

If he continues being a douche to Sei like before then please get rid of him as soon as possible