MTL - Vanguard of the Eternal Night - Chapter 123

Being given a chance and reincarnated is nice and all, yet why do I have to become that male friend who just watches the protagonist flirting with his harem?---World: Kaguya-sama: Love Is War - Hyouka ----

This novel is about the young master of the Du clan, Du Shaofu, who was born with crippled veins and is unable to cultivate martial arts . After finding out about his situation from the clan while returning home he got hit by a lightning and a mysterious ‘first scripture’ appears and after studying for ten years he was able to mend his crippled veins together and starts his journey to glory.

- Description from Novelupdates

This is a world where science and magic coexist.

Some people here seek powerful magic, and some seek eternal truth.

A science tyrant who came from another world, started as a little librarian, with magic in his left hand and truth in his right, kicking the door of the new century with one kick.

Some people call him the forerunner of magic, some say he is the founder of science.

Some people describe him that way.

In the new century, Blair is a symbol of evil.

- Description from novelbuddy

He was straight.Even after dying and waking up as the protagonist in his sister’s BL web novel.He was straight.Even with all the male leads practically throwing themselves at his feet.He was straight.Even when his heart inexplicably skipped a beat during romantic moments with one of them.He was straight.Even now... when he could somehow get pregnant.He was straight.There was no denying it.HE. WAS. STRAIGHT!“So, can someone please help me get out of this goddamn novel already?!”[Warning: 18+ content and there will be some themes of non-consent, mentions of abuse and suicide.]