Kateikyoshi no Kishi Knight desu. - Vol. 1 Ch. 13

[MangaDex]

 

[Ceiye]

He was fighting for your honor, sir!

 

[korvas]

This series finally has a bl tag lol
First time I've read one in a comedy manga format

 

[NemuiSan]

This series finally has a bl tag lol

Lol.
That reminds me, when the live-action began airing people on mydramalist were complaining that it wasn't or felt BL enough and stopped watching. As the series went on, other people complained that they didn't want it to be a romance since Toru is 17.