A loli with a gun is never useless!!
A loli with guns and KATANA'S is even less useless

I guess no one notices Toradora route here, she already claimed him in the classroom, scared the fuck from people gossiping about love, saved his ass once, he saw her mini boobs.
what is left to do is him visiting her house only to find out she lives near him, and cook for her, i'm not gonna hope he will clean her messed up house, although this might go reverse in this section, she will visit him, clean the house, cook for him etc.
gotta add another thing about the loli:
Loli voiced by Rie has 2 guns and 2 sharp katanas hidden behind her small back, there is nothing that would mean "this character has flaws" ever.