@Suck-a-duck while we don't completely see it some of the extras and the anime make it clear that the first year Hana would only see her sempai when he was alone and was actually worried about him not being able to socialize. Though I don't know if there's an explanation other then just the...
@HDMI1 There's no evidence she knew what would be happening as to my knowledge he's the first to be that successful with the revive and unless she had spies that were able to communicate through the anti-magic barrier she wouldn't be able to hear the speech.
@cybik not necessarily if you are married to multiple people that would be more along the lines of polygamy or polyamory rather then cheating as long as they are aware you are married to multiple people.
@Chizan I was curious because back in March I think it was the mangaka made an animated short to draw attention to the series and said that Volume 1 and 2 sales were still under 1000 and if that continued they would have to end the series.
This and that one thing from the prequel help elucidate why Arsenyo's emotional and mental state with him only really getting better recently as seen with chapter 52.
I find it surprising people say that it's uncommon as I know at the very least Tensei Pandemic, Pumpkin Time, Boku Girl and I think En Trans all touch on the topic.