You Are My Favorite (2023)

Both are queer love stories with a main character able to control/reverse time, with cool vfx when time-travelling. The main theme for both shows is regret and loss with the cost of love, and resetting things to aim for an ideal outcome.

They both involve the main character getting the ability to travel back into the past to fix their mistakes

It's technically the exact same story, just this time instead of getting the girl, the lead fumbles and gets the guy.

One is BL and the other M/F but both have similar themes - one of the leads time traveling, attempting to change events in their school days, and an unexpected love story with a person they missed the first time around.

Vice versa has a concept of moving into a different world while You are my Favorite has a concept of Time travelling. Both Time travelling and transporting/moving into a different world has always been a intriguing topic for me. We can already see the chemistry between the leads even though it hasn't aired yet.

They are both about making changes in the past to have a better life in the future.
I liked how both series explored how one choice can drastically effect other peoples lives.
I thought the chemistry between lead actors was better in BMF,
I did like 609 Bedtime Story but it did have some confusing parts in it,

Similarities are both dramas are BL and Time travel dramas.

Differences :
history 1 is Taiwanese drama . time travel is accidental . and already established relationship between MLs before time travel

Be my favorite is Thai drama ML actually want to travel to past to make changes and win FL's heart but instead develops relationship with his rival in love ML.

Both are BLs that contain aspects of time travel/looping time to alter an unwanted outcome, and are set in a post-HS setting -- Be My Favorite is set across university and 10 years later, and Triage is set in a medical/university setting. The leads in both shows have good chemistry.

Though Fish Upon The Sky is not about time travel, the protagonist of Be My Favorite, in pursuit of his crush, ends up with the person he thought to be his love rival.

The concept of time travel. In be my favourite kawi travels from future to past to fix the past with crystal ball being the medium. In case of the warp effect Alex trvales to the future from past to fix the past with a camera being the medium. Both being fixing the past for a better future. The story and events are interesting and intruiging.