The suntetsu (寸鉄) is a Japanese concealed weapon.
A Suntetsu is a metal rod/spike about 6 inches in length with a ring attached to it. The middle finger is inserted into the ring and the Suntetsu rests in the hand by various grips. Suntetsu are small, easy to conceal and relatively simple to learn how to use. Suntetsu are used for stabbing, poking, pinching, striking, smashing, scraping and throwing. You can use a single Suntetsu or a pair.
Mukai kaze ni tobitatsu ko no ha
Sukoshi houkou wo kaete arukou
Kimi ga te wo hiku
Nanigenai hibi ni mo
Shiawase wo nosete
Wasureteta omoi ga
Kaze no you ugokidashita
Kimi no koe de
Sunao ni warai aeru koto
Nante subarashii kimochi darou
Aruku hayasa ni ki wo tsukete
Awasete kureru yasashisa ni
Ai afureru
Kimi to onaji aozora
Ochiba fumishimete futo omou
Otona ni naru to tsuyoku naru bun dake
Moroku naru yo
Funsui no mae de
Kouun wo matsu yori
Boku to atatakai mono wo nomou yo
Sonna fuu ni
Nagareyou
Moshimo michi ni mayotta nara
Issho ni chikamichi mitsukeyou yo
Kangae sugi nakute ii yo
Kyou no sora ga taisetsu na hi ni naru to ii ne
Kimi to onaji aozora
Owari no nai
Koi ga aru kamo nante
Shinjite mo
Douka warawanai de...
Sunao ni warai aeru koto
Nante subarashii kimochi darou
Aruku hayasa ni ki wo tsukete
Awasete kureru yasashisa ni...
Moshimo michi ni mayotta nara
Issho ni chikamichi mitsukeyou yo
Kangae sugi nakute ii yo
Kyou no sora ga taisetsu na hi ni naru to ii ne