Sanpakugan-chan wa Tsutaetai.

Meet Amane Mizuno a girl with fierce sanpaku eyes and a pure heart! She has recently fallen for a boy named Katou, who has the exact opposite attitude! Will the tender-hearted Amane ever tell him how she feels?!
(Source: Denpa)
Notes:
- Chapter count includes a bonus chapter.
- Originally self-published on Twitter, after six chapters it was serialised by GANGANpixiv.