GDHH-025 Now, I'm In The Middle Of Four Years Of Retaking Entrance Exams, And Naturally, My Parents Have Abandoned Me, And I Don't Even Have A Girlfriend, Let Alone A Friend! The Only Thing I Enjoy Is Playing With An Innocent Student From The Neighborhood Who Calls Me "big Brother" And Comes To My Room! It Was Worth It To Have Tamed Him Since I Was A Child...