Russian Shell with … anime characters

Anime Characters :

1st Image AN-94 From Girls Frontline

2st Image Noko Shikanoko from SHIKANOKO NOKONOKO KOSHITANTAN

3st Image Look like Alisa Mikhailovna Kujou aka Alya from Alya Sometimes Hides Her Feelings in Russian

4st image Hirasawa yui from K-on! (I think )