Related Series Timeline : ORDER OF READING 1 Doukyuusei [Classmates] - Prologue 2 Sotsugyousei [Graduate] - Sequel 3 Sora to Hara - Spin-off (Story of Teacher) 4 Occupation to Beloved - Mixed 5 Graduation Certificate - (Epilogue artbook) 6 Blanc - !!?? (/TДT)/
Graduation Certificate (artbook)