The 10 O Clock Rule Volume 1
22-ji no Rule, 22時のルール
"Every night, he would call to ensure I was safe. Now we are adults; he will even come pick me up. Always, at precisely 10 o'clock." As someone who only fancies cute guy, the high school teacher Wataru Chinen's first love was a 'miscalculation.' He never thought that his lovely childhood friend, Ryusei Yamaguchi will turn into a capable adult man, leaving all his youthful innocentness. When Ryusei confessed, "I've always wanted to hold you," with his domineering eyes, Wataru couldn't say a word.