
Nah~ Not really. Iku thinks Seo's a ghost. But actually we still don't know he's already dead or may be just unconscious somewhere but his spirit can't find his body.
As a romance, it's more like the last case which I guess Iku may help him find his body then he recognizes Iku or not will be an issue later..

This expensive one!? (▰˘◡˘▰)
http://www.mangago.zone/read-manga/2345/bt/c002/pg-23/

My previous post is just joking.. I guess it that way because..
- Normally ghosts can't RIP & wander around because they concern about something. But Seo's quite cheerful & concerns nothing though he can't remember anything but his name.
- If he'd been dead, they would have indicated it somewhere. But Iku on found this - http://www.mangago.zone/read-manga/2345/bt/c003/pg-15/
BUT IN THE END DOESN'T HE HAVE TO GO AWAY??? THAT CAN'T HAPPEN, BUT HE HAS TO DOESN'T HE?? Σ(っ°Д °;)っ