I Don't Know What My Little Sister's Friend Is Thinking (Pre-Serialization)

I Don't Know What My Little Sister's Friend Is Thinking (Pre-Serialization) cover

Chie-chan has a deadpan friend, Tsuyu-chan, and Chie's older brother has no idea what she is thinking. Only thing he knows is that she's paying him a lot of attention, glaring at him and avoiding him… **Note:** Translated by [Baby One More Time](https://mangadex.org/group/8518/baby-one-more-time) with the permission of the author. ___ **Alt Official Raw:** [Defunct Twitter Moment](https://twitter.com/i/events/1159872513876250625)

20 chapters

I Don't Know What My Little Sister's Friend Is Thinking (Pre-Serialization)

I Don't Know What My Little Sister's Friend Is Thinking (Pre-Serialization) is a completed manga by Okiumi Rei, first published in 2019. It blends romance, comedy and slice of life. You can read all 20 available chapters of I Don't Know What My Little Sister's Friend Is Thinking (Pre-Serialization) online for free on MangaPulse; the newest is Chapter 17.3, added 2020-04-28. The series is finished, so you can read it from start to end in one go.

Okiumi Rei · 2019 · Completed

Romance · Comedy · Slice of Life