Ascension of the Sylvan Cosmos - Chapter 243 - . Start of Sirol City’s Siege.

I exist in the darkness, disappear under the bright light, and will eventually devour the sun and turn into the shadow of all things… Known by people as the indescribable terror of darkness; the king of shadows; the dark day; the existence of the shadow of the world , is still just a somewhat special high school student, facing a weird death game…

- Description from novelbuddy

Kuramoto Daisuke, a freshman in High School was suddenly exposed to someone vanishing in front of him. Turns out he was admitted to a Special Class full of Isekai Heroes that were regularly summoned to Otherworlds since the start of their Middle School. He was told that he was to become their Support to prevent each of the Heroes' fate of dying in the world they were summoned into. Though mediocre, he realized that his ability has a great potential but it needs a lot of hard work on his part.

Unconvinced of being just the Support Character, he vowed to excavate his mediocre ability, all the while supporting the Heroes using it.

And maybe more.

A powerless woman’s worst nightmare is marrying someone against her will. When those who are supposed to protect her betray her in the vilest of ways, Leonor is forced to marry a Duke known for his cold nature and repulsive appearance. After a miserable childhood, it shouldn’t have been a surprise to her that her future was never truly in her hands in the first place.Duke Desmond de Montclair was nobody before the war. He garnered the King’s favor by doing the impossible in battle. Unfortunately, any achievement is eclipsed by his appearance and unbearable personality. In a kingdom that idolizes beauty, there is no room for someone like him.At first, Leonor finds life with the Duke to be what she’s used to - walking on eggshells and never speaking what’s truly in her heart. Eventually, things slowly start to change as the Duke learns about the horrors she faced while living with her family. His power becomes the key to her revenge.However, in a moment where she feels cornered, Leonor confesses to the Duke that she’s in love with someone else. The progress she has made with the Duke comes crashing down around her.Will her magic abilities be enough to convince the Duke not to throw her out? If she can make herself useful to him, perhaps she can gain his sympathy somehow…