The chapter seems to explain itself well enough. His hand brushed up against her chest, awakening a sword hidden by light that extended and let out a burst, with him collapsing afterwards. Completely normal for any healthy young male.Ah yes, a deus ex machina (translated as: god from the machine in Latin). One of my least favorite plot device, mainly because of how hard it is to implement it correctly. However, I do think it would work fairly well here if it’s explained well as to why it happened when it did.
Why the fuck... Do every manga I read that has been recently updated... Whose latest chapter... ALWAYS ENDS IN A CLIFFHANGER?!?!?!?