Twins in Agony by Sakurano Itsuki — Dropped

Waz

Ako and Komachi are twin high schoolers who are famous for being close. They look almost exactly the same, except for the length of their hair. They're also similar in terms of academic performance, but in their latest exams, Ako claimed to be in a "slump" that caused her scores to fall.

Because of this, she has to take remedial English lessons from the assistant homeroom teacher, Oosawa Maki. When asked about the reason for her declining performance, Ako tells her that she was worried about love.

(Chapter 10 is the final chapter)

Chapter 1: Timid Selfishness released May 14 '20
Chapter 2: Creeping Anxiety released May 22 '20
Chapter 3: The "Right and Wrong" I Long for released May 25 '20
Chapter 4: Blackout released May 26 '20
Chapter 5: Correcting My Path released May 26 '20
Chapter 5.5: Volume 1 Extra released Sep 10 '20
Chapter 6: Uneven Slices released Jul 27 '20
Chapter 7: Empathy released Sep 15 '20
Chapter 8: Paragon of Virtue released Nov 26 '20
Chapter 9: Tailored Words released Feb 9 '21