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I only know Fight on! Yeo Manager and Renai Flag Zero Joshi no Meisou sadly,,, I'm not sure if it would count, but I ♂ Took A Trip to an Otome Game and Transferred to another world, but I'm saving the world of an Otome game!? are isekai otoge parodies featuring male mc's with bl undertones~~ although they parody otome games rather than bl like this one ( ̄∇ ̄")
You can find them all here!
Ahh this is what i have been looking for, can someone recommend me mangas or manhwas like this one? (=・ω・=)