Wakizashi by TOMOTSUGU? Having a bit of trouble with the first character.

[tbonesullivan]

I looked at this a bunch, and first through it might be 久次作 - HISATSUGU SAKU, but the more I look at it I think it is actually 友次作 - TOMOTSUGU SAKU. Just wanted to get some other eyes on it, and maybe see if anyone has any information on which smith it is. There are a lot of TOMOTSUGU and HISATSUGU smiths. Thanks in advance!