Detective Conan: Zero’s Tea Time - Vol. 1 Ch. 10 - I've Decided

[MangaDex]

 

[ChibiPengu]

From Page 8:
Here is a link to the song that Rei is singing: https://www.youtube.com/watch?v=_C_WIGih-V8 , and here are the lyrics that were referenced from here: https://en.wikipedia.org/wiki/Furusato_(children%27s_song)
According to our translator, this song is a common Japanese children's song.

 

[Yurixyaoi]

Amuro and haro? We gundam nao bois

 

[Multitules]

its kind of an uglee doggo but darn, givin me the fuzzies with its shenanigans....