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After we spent the entire night eating out with friends, laughing, and enjoying life slowly, we came back to Oro's castle and we spent some time watching the stars. Over time everyone went to sleep and Elfina and I stayed looking at the night sky.
Although she had been enjoying herself, I still felt like there was something my Summoner was hiding from us, a slight… pain she felt. It wasn't physical, but perhaps there was something painful in her heart, something bothering her which she didn't really wanted to tell us about, maybe because she didn't wanted to bother us.
Despite how selfish and annoying she started as, Elfina had grown up a lot since she summoned me and has become someone responsible and even self-sacrificing for others. It is pretty obvious she's hiding something, and it is worrying me a bit.
Mostly because I feel that I may soon depart, and I don't want to leave unresolved problems here.
Check "The Protagonist's Sister Is Actually the Strongest"!