>>57932021
The person who made the picture I posted said it was inspired by Miraculous Ladybug. It's such a ridiculous melodramatic trope but it keeps being used because people just eat that shit up including me. But if it has an exact name I can't find it, closest thing I found is this generic page
https://tvtropes.org/pmwiki/pmwiki.php/ChildhoodFriendRomance/AnimeAndManga