Shoujo Kishidan x Knight Tale

Whilst being groped on the train, timid Tenkawa Shinobu is saved by a literal knight in shining armour. The knight: Kasugai Kanade, an honourable knight aspiring to be the best in the world. Shinobu is swept into the world of Heavy Combat as Kasugai strives to be skilled enough to be accepted as one of the "Crestless Knights"