 If you liked Rakudai Kishi no Cavalry |  ...then you might like Busou Shoujo Machiavellianism |
If you are looking for a similar story where the protagonist had a rough past and became strong with no one expecting it and later girls fawning over him, then I recommend the other: - Girls are strong, but main character is stronger - girls hated them, then they all became friends
report Recommended by OmniCheese