Kaii-san to Ore - Ch. 10 - The Ichimatsu Doll's Youth (Part 1)

[MangaDex]

 

[Khulmach]

She thinks she smells...

 

[BakedBanana]

"My first friend..." (Page 4)

Didn't you make friends with those other ghosts?

 

[LupusVir]

Didn't you make friends with those other ghosts?

I believe those were all standalone.

 

[cgr]

Didn't you make friends with those other ghosts?

two likely possibilities:
1. chronologically this happened first.
2. she's the first girl who directly acknowledged him as a friend , the others just played with him once or twice so he thought they didn't truly think of him a friend