The name is no stranger because KIZUNA is the name of an anime character in NARUTO. LOL
It is very good for this coin to appear because after checking in explorer it is quite understandable by the way of sending the KIZUNA coin.
ref :
https://explorer.kizunacoin.jp/ yes, like the name of a character in a Japanese animated film. but I'm curious, is the team from this project pure Japanese? or only use names from Japan to get interest from the Japanese community?
This is developed by the Japanese team.
Also, the devs love Japanese animations.

Like we don't mention things like that because we can see that the head office of KIZUNA Coin is in:
Address - 257 Churchmans Road
New Castle, DE 19720, U.S.A
But I see for the development team indeed from Japan:
CEO - Shouichi Hatsuse (初 瀬 正 一) [Discord name - mori].