Is this work from Mouse1 or M1?

At Freeyy.org say that it's from M1.

It doesn't look like M1's works to be honest. Their art is so similar its really hard to tell... I don't know if this is M1 testing new shading techniques or a different artist trying to establish their own style. /shrug

L to R, <> means slurring

1)
<Mister ball is rolly and can take it easy!>
<Reimu will roll and take it easy too!>

2)
<We played a lot!>
<We really took it easy!>

3)
yu! <It's mister meal!>
<it looks tasty!>
(Reimu) (Reimu)

4)
<grace(or 'well eat it') easy!>
<grace!>

5)
mun-ch mun-ch!
mun-ch mun-ch!

6)
<happynessss!>
<hhhhappyness-!>

7)
yu u~n <it's tasty!>
<good! good!>

According to the thread on this [url=http://yukkuri-futaba.sakura.ne.jp/published/futaba.php?res=161]channel[/url], Reimu twins is the 32nd chapter of M1's Yukkuri Hardship series.
The best way of telling M1's works is the font used in the texts, and the text in the full series matches M1's font of choice.

But he always writes the chapter name on his images, which isn't on here. Anyone got the 2chan threads it was posted on?

The chapter name was written in the last panel of the full series post #5799.

Hm, so does anybody have mouse1's works for comparison?

Giving credit to the correct artist is important. :o

It's a very good question, maybe Mouse1 works are those which look like M1 on a sketchy style, like in post #4762.

Interesting, post #5799 and post #5786 have slightly different last panels, and post #5786 doesn't have the "yukkuri hardship" title.