Need help. Who made this?

When your sensei is helping you with "stiff" issues and your

Eating cake in the bath [The Testament of Sister New Devil]

Waking up with Maria [The Testament of Sister New Devil]

Measuring Miharu's Miharus [Kiss x Sis OVA]

Measuring Riko and Ako [Kiss x Sis OVA]

Biggy yo biggy

Topless Lucoa [Kobayashi-san Chi no Maid Dragon]

Anybody know this anime?

Beast's meal In Ninja Scroll

Sleeping [Mouse]

Anime [High school of the dead]

Anime [Prison School]