Eccentric Hobby

From Shinmakoku Scanlations :One day, high school student Nagakura (normal dude) receives a love letter. Heading to the promised tree, the one who was waiting for him is Nishioka (super otaku) ...dressed in a sailor girl uniform!! Super eccentric \\\"campus love\\\" comedy in 4-panel comics~Part 1 = Act 1, Act 2, Act 3, Act 4, Act 5Part 2 = Act 6, Act 7, Act 8, Act 9, Special 1, Special 2Part 3 = Act 10, Act 11, Act 12, Act 13, Act 14Part 4 = Act 15, Special 3, Act 16, Act 17, Act 18Part 5 = Act 19, Special 4, Act 20, Last Act, Extra