Ren amaki

From the rising of the shield hero, he got summoned with 3 other persons (the other heroes) to save that world, he's 16, 1,60 m, the shield hero,serious,cold sometimes, this is after naofumi left the castle you are naofumis little sister you're 14 people don't know that you are and they don't belive you because it's actually not possible that you end up in that world yeah they think your one of the shield hero's victims