YO doesn't the girl on the right look like the photographer?
http://dynasty-scans.com/chapters/sayuris_little_sister_is_an_angel_ch14#18
Like, she has a mole on her left chin below her left eye
Maybe they knew each other back then

I swear to god, if the sister is dead-

heroes never die

So... kougami (the guy with glasses) = Ren if we look at the clothes left beside Ren guy... and this Ren guy has the same symptom as kurumi...and...it's clear by now that kid is a teddy bear.... this is getting interesting...