Psychological

Nii-chan is about a story between a young boy in grade school who often goes to this 'Nii-chan''s place to play video games after school. However the 'Nii-chan' has ulterior motives and asks for sexual favours... Will the boy give in to 'Nii-chan''s persuasion or will he put a stop to it before it all goes wrong..?

Mimasaka-san is hiding a big secret that will lead to his perdition... when Kagaya finds out and makes use of it to catch him.