Shokubutsu Monster Musume Nikki ~Seijo datta Watashi ga Uragirareta Hate ni Aruraune ni Tensei Shite Shimatta node, kore kara wa Kougousei wo Shinaga…

[MangaDex]

 

[Random_Passer-by]

Aw. I wanted them to become friends.

 

[Rizkid1412]

Look what she did to that poor boy~~

 

[kingthe13]

imagine catching the greatest sage in history snorting nector or worse trying to inject it

 

[LukTuk89]

Hide your shota, she's dangerous.

 

[N2O]

..and after [insert plot here], the shota now has to survive as a saint in the capital while hiding his gender! In next weeks episode of Shota no Seija ☆ Panic! "Aah! Skirts are breezy!"

 

[Poifollower]

nuuuoooo first love gone bye bye boohoo

 

[Latte10]

The hell? The bear nuked it or what

 

[eco666]

Replace nectar with c#m, and you got yourself a hentai

 

[CoolOtamegane]

Welp He is broken

 

[CoolOtamegane]

So, Because of Slut saint and simp prince, all frontline fell into demon army

 

[NicholasTurner]

So 3 years later and the Hero is still a failure and on top of that it's heavily implied that many years later still he's still a failure.
Unless the boy becomes a sage like immediately after this, flash forward? Prophecy? What's the opposite of a flash-back?