Kamen Dosokai (2019)

Both are mystery romance dramas about classmates who met again after reunion.
Bonus: Mizobata Junpei is on both these dramas ;)

Shintani Yosuke left his hometown right after high school graduation. He wanted to leave behind memories of his older brother who died in an accident and a teacher who was bad to the students.

Now, Shintani Yosuke is back in his hometown due to a personnel transfer at his work. He decides to attend a school reunion and meets 3 friends from his high school days. Yosuke and the 3 friends kidnap their ex-teacher who punished the students with physical force. They beat him up and leave him there. Shintani Yosuke and his 3 friends thought it was a joke, but the teacher is found dead the next day.

Friendship & Secret~ While Reverse plot is College student, Kamen Dosokai is childhood till high school student..but both are HIGHLY RECOMMENDED to watch!!

Urashima Eiji is a university student and his father is a serial murderer. One day, he realises that he is suffering from a dual personality disorder and worries that his other personality may have committed murder. This leads him to begin investigations to find out the truth.

~ Adapted from the manga series "Shinai naru Boku e Satsui wo Komete "by Inoryu Hajime (Story) and Ito Shota (Art)

Both dramas are quite similar, have similar themes and the plot in both Risky and Kamen Dosokai follows almost the same pattern.

Yosuke…. Yosuke. Yosuke! Mizobata Junpei as both Yosuke! And Takimoto Miori and Mizobata Junpei as lovers, again! Stories are both messed up, suspenseful, and unpredictable, kind of scary. One of the actor one both dramas performed as antagonists, I can’t ??

He Fei's wife, Li Mu Zi, disappeared mysteriously during their wedding anniversary trip. While he was searching for Mu Zi, she appeared again out of nowhere, but he insists that the strange woman in front of him is not his wife. Lawyer Chen Mai gets involved in this bizarre case, and more mysteries slowly emerge.

A dark love story where 7 primary school classmates gather for a reunion but find themselves locked in the building; as they eye one another with suspicion, they start killing one another in a bloody battle filled with betrayal and love.