Nope A1 end means its the only one like it for 
that shot. 
You have mouth layers which mean that they were 
talking,  but the cel marked A1end means that 
its the only one in the shot that even looks 
like it. 
They didnt need to draw several cels of inuyasha 
in order to make that shot, they made ONE base 
shot A1end and layered mouth cels over it to 
animate the talking.
 Then they would have changed shots and used a 
different sequence of cels after that.(none of 
them would have looked like your cel because 
they wouldn't need another one)
  hmm heres a pan A1end of harusiform.
There are no mouth layers, the camera stays with 
this cel moving (panning) over it, and then the 
scene changes. There are no other cels like this 
one.  It was the only one created for that shot. 
The sequence is A1 (the first cel) End (end of 
sequence) Your inuyasha is a lot like this one..
if your still confused you can email me..notta a 
prob..its pretty late and even though I have 
insomnia..My brain cels arent all firing...so My 
explanation would be alittle fuzzy..

ja pale