723NNG-004 The 4th Installment Of A School Series That Follows A Cute Girl Who Loves To Be Licked And Her Lessons. Attendance Number 037 Serina-Chan Who Transferred From An Ordinary Preparatory School This Time. She Is A Serious And Smart Honor Student Type, And She Is A Sensitive Girl Who Usually Shows A Mischievous Smile But Speaks Shyly About Naughty Things. What She Thinks Most Important As A Teacher Is The Ambition To Pursue Naughty Things. Serina-Chan