Responses
tamon's b side fits the gloomy criteria ! have you read it ?
https://www.mangago.me/read-manga/tamon_kun_ima_docchi/ or maybe this one https://www.mangago.me/read-manga/uchi_no_kuro_madoushi_ga_kawaisugiru/ (hella tsundere)

Does anyone have recommendations of mangas similar to
The Noble Girl With a Crush on a Plain and Studious Guy Finds the Arrogant Prince to be a Nuisance
And
My Black Mage is Too Cute
Basically just gloomy/almost tsundere seeming guy x sunshine girl? Any Recs of this kind and you'll have my deepest gratitudes I need more grumpy x sunshine in my life