[i]The Reason Why My Strict Female Boss Turned Deredere on Me After Turning Back into a High School Student: High School Life Where We Redo Our Mutual Crushes[/i]

Light novel series by Tokuyama Gintarou, with illustrations by [[Yomu_(sgt_epper)|]]. 

Premise of the story is exactly as described by the title and 'sub-title'. 'Nuff said.

[expand=Notes on title terminology]
LN title: 厳しい女上司が高校生に戻ったら俺にデレデレする理由
[tn]"The Reason Why My Strict Female Boss Turned Deredere on Me After Turning Back into a High School Student"[/tn]
Sub-title: 両片思いのやり直し高校生生活
[tn]"High School Life Where We Redo Our Mutual Crushes"[/tn]
* Promotional materials and book lists tend to just use the title part alone. 
* Volume numbering is always done after the title. 
* If the sub-title is attached, it comes after the volume number.
* The current Danbooru tag is a romanization of the title part, with the 'subtitle' omitted.[/expand]
kibishii onna joushi ga koukousei ni modottara ore ni deredere suru riyuu