I'm searching for shoujo manga. (most likely an one-shot)
Heroine called herself "a secondary character" and helped her pretty friend to find a boyfriend. But after finding the right guy for her, he choose our heroine over pretty girl.
I hop someone can help! (๑•ㅂ•)و✧
srry ff
Uhmmm idk if this was what you are looking for. But it fits to your description... i think.
http://www.mangago.me/read-manga/warau_kanoko_sama
And here's the sequel
http://www.mangago.me/read-manga/koi_dano_ai_dano
I'm looking for a specific story, when guy got isekai'ed BUT after being transported to other world he discovers he can open "Inventory and Build" tab and build amaizing buildings in seconds - when in this world, u CAN'T just do that.
I think he met someone important to the country in literal fourth chapter? Also: might be harem, don't remember
Edit: he can't do any magic or anything other than building
Dungeon reset? Or solo login?
Also was it a manhua, manga or manhwa?