Twins

They are very very similar . In Not Me the series there were twin brothers and both had totally opposite behaviours , if one is sun then the other is moon . In Twins the series it has the same concept one brother is friendly , playful but the other is cold with an unfriendly nature . In both the series the cold brothers ( Black in Not Me and Zee in Twins ) the other brothers tried to take their brother's places , when they took their brother's places people around them find iyt really strange as they have changed a lot suddenly. In Not Me because of White 's ( the friendly brother) many things changed, he became so friendly with the others and because of his sudden kind nature Sean fell in love with him ( White ) . In Twins also because of Spite's ( the friendly brother ) persuing and friendly behaviour First fell in love with him .... I find this two series very similar but according to me Not Me is more fun as it contains triller , suspense , romance , action soo I love this series so much as it matches my vibes....

Both BL with volleyball. The family is an important factor. The leads are students. That's all, but I have write one more sentence to 100 characters.

this series is also based on games and the not exactly rivalry to love but some what same context and relationship development through all the miscommunication

volleyball team, BL series, romance and rivalry :)
one is thai and the other is filipino, but it doesn't change how good those series are !!

They are very similar in my opinion they both have a heavy themes around sports although different they do have their similarities as well as a blossoming relationship between two main leads who have a rocky or somewhat complicated relationship aswell as knowing eachother since child hood, watching twins heavily reminded me of your my sky even though your my sky has noticably better production in lighting camera work etc i think more people should watch it and would enjoy it

They might not have that much in common except:

- we have another set of twins that swap places / identity for the other twin who is not able to in the moment
- the mains families are dysfunctional (by Playboyy main, I refer to Nont/Nant)
- supportive friend group shenanigans but also comes with conflicts
- there is some spice in both dramas. very high for Playboyy and I might say medium for Twins (so far for the side couple up till ep7)
- main ship dynamic is (fr)enemies to lovers / fwb

The major differences are:

- Playboyy is a dark, erotic mystery crime drama playing in the sex industry (take the content warnings serious)
- Twins is a romcom about a Volleyball team with a side plot in Jujitsu

Both are Thai BL dramas that focus on sports with Our Days about a basketball and Twins about volleyball.

Both are sports themed BL, both have basketball, both have leads that are hesitant to admit their feelings.

There are no similarities plot wise, but if you are looking for another BL where the characters play sports, in this case volleyball, then Crossing the Line is an obvious suggestion.