Danbooru-based image board with a specialization in high-quality images.

azuki_azusa digital_version hentai_ouji_to_warawanai_neko kantoku maimaki_mai seifuku thighhighs tsutsukakushi_tsukiko tsutsukakushi_tsukushi

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What's happening? That girl on the left is using telekinesis to knock over the other girl's glass? She's not touching it and she has this evil look on her face like "yeah I'm going to mess up your homework!"? Or something?
To be fair she IS pouring another cup of drink to the homework of the girl on her left side.
Mai tried to get her cup of drink while focusing on her homework, so she knocked it over. Azusa was trying to help Mai while pouring her own cup onto Tsukiko, so Tsukiko helps her out by drinking it instead.

That's how I read it