Thanks for the TL for the folks. Need just to point out that on page 11, the bubble in the middle of page, the TL for it does not fit quite.
さやかちゃんって。。センパイ(先輩)が気にしないのをいいこと(事)にしてるよね Sayaka tte... senpai ga kinishinai no wo ii koto ni shiteru yo ne (With senpai it is mainly Kozue meant)
Instead of "Sayaka... you take advantage of the fact that I don't mind, do you?" It should be "Sayaka... you are going a great work so that Senpai does not notice, don't you?" 気に can be used as "notice" instead of "minding".
The sentence on page 15 should be "I don't think you would mind though" (Even tho Kaho did share a sense of relief on page 11 that Kozue senpai would not notice it, Sayaka assumes that if she leaves marks there, that Kaho herself would not mind them)