This story is truly magnificent. I doubt I have ever seen such a manga written so wisely as such an explicit way.
It certainly challenged many of the assumptions that many other manga hold. The idea of the goddess is a great example. Most manga regard religion as something like "superstition"...
I think the problem of love in first sight is that you would also fall in love with other people who might be more atttractive. That lack of commitment would hurt your partner. Team childhood friend!
@gelert10
As for leaving the blood everywhere, Seiran only started leaving blood everywhere when she lost her strength to stop the blood. You can pay attention at the panels in page 24.
@anim8tur not a bad explanation. Though I would say that Seiran have already seen Mimi's healing power, Mimi healed Shiina by giving the oral treatment.
Seiran could have ask for Mimi's help, but she chose not to.
Poor Mimi...
It might make sense if you look back to the past chapter. Seiran always put a strong front to everyone except Ari. She only exposes her traumatic experience of killing someone to Ari, not Mimi or any other people. Maybe Seiran's will power is too strong for her own good. It is understandable...