From left to right:
Back row: Tsundere meganeko archetype.
Back mid row: Childhood friend who acts like a sister to the male lead archetype; busty teacher who says, "ara ara" and provides healthy fanservice archetype.
Front mid row: Cool and collected swordswoman who has occasional bouts of embarrassment and end up falling for the male lead archetype; male lead's nerdy friend who acts as comic relief and is frequently abused by the female characters archetype.
Front Row: "I will fight to the end for my friends" type male lead, frequently gets attacked by girls less skilled in battle than him for "being perverted" and loses badly, yet never seems to lose to any enemies despite always nearly dying unless it's a serious plot point archetype.
WOW, THIS MANGA LOOKS REALLY FUCKING ORIGINAL, THE BLOKE WHO WROTE IT MUST BE AN ABSOLUTE GENIUS.