Mechamecha Kininatteru Gyaru ga Nanka Yabee Kanji ni Natteku Yatsu - Ch. 81 - Her Feelings Are a Bit Mixed

[MangaDex]

 

[Al_Azif]

Are they twins? They look way too similar aside from their hair. Even have the same mole.

 

[PantsuPillow]

Ahh , it's the yandere from his other series "A Girl Who Seems Like a Yandere but Isn't Actually Yandere, but Is a Little Bit Yandere".
Quite funny how two of his series are basically about the different sisters both being a bit yandere.