Want a extremely powerful mc but hid his/her power

Please recommend me some powerful mcs but they are undercover or they are hiding their power
I'm okay with anything the mc can be male or female both okay
Prefer it if they were in high school

Something like
https://www.mangago.zone/read-manga/black_haze/

https://www.mangago.zone/read-manga/i_m_a_level_d_student/

https://www.mangago.zone/read-manga/my_school_life_pretending_to_be_a_worthless_person/

https://www.mangago.zone/read-manga/unordinary/

Thanks ~