BL novel recommendations

I recently got into BL novels and can't find anything that is similar like to those I have read so far :
● The Northern Grand Duke’s Hamster
● fairy trap
● God's monster
● I’m the Villain’s Constellation but I’m Broke

I really like the concept of BL with action that are system related or play in a historical setting. If you know any novel that is similar to any of those or have the same vibe to them I bet you to share the name please