
Nope.... you see the dad has the same face has his old self ... that's why he complained at the beginning like why do I still have the same face and what not..... and since the dad has the same face it's like looking at his past self but blonde..... and now he sees the king that has the same face of his bestfriend from his past life..... it's more like a metaphor like dad looks like his past self and now his bestfriend looks like his past bestfriend self ...... I think it's just a reference of the friendship of his past life.....

Actually I don't think it has to do with the best friend I think the king is this person here from chapter 20 http://www.mangago.zone/read-manga/tensei_shichattayo_iya_gomen/nbt/mk_chapter-20/pg-22/
as for the reason why he vaguely recognized him I'm guessing it was because of the contract he made with shiro? this is pure speculation though I might be completely wrong ╮( ̄▽ ̄)╭

Oooooh i forgot about that.... i was basing it more cuz the silhouette looks like the friend from the past life....
http://www.mangago.zone/read-manga/tensei_shichattayo_iya_gomen/nbt/mpn_chapter-1983818/pg-9/
http://www.mangago.zone/read-manga/tensei_shichattayo_iya_gomen/nbt/dbc05ad20d3bca6e/Ch1/5/
http://www.mangago.zone/read-manga/tensei_shichattayo_iya_gomen/nbt/dbc05ad20d3bca6e/Ch1/6/
So the best friend of the MC before he reincarnated was also killed but came back as the first king? (Thats what I can deduce from the images....)
What's happening??? Can someone explain why he was resurrected before or if there is any meaning to this?