Here's a look at the new 5/18 releases from WYJ. Here's their first day Shoseki results:

Minamoto-kun Monogatari volume 13 = ranked #14

Rikudou volume 16 = ranked #39

Motoyan volume 12 - ranked #53

Kunoichi no Ichi! no Ni volume 1 = ranked #55

Dorokei volume 1 = ranked #127

Tamata volume 3 - ranked #355



Looks like Kunoichi's sequel had a decent premiere, Dorokei seems to have underperformed a bit, and Tamata will probably be on its way out pretty soon with declining results like this. It's also worth noting that Akebi-chan no Sailor Fuku volume 3 ranked #19, and its first and second volumes ranked #257 and #342, respectively.