Japanese hiragana chi, small yo, and small tsu.
Hiragana is a syllabary (not alphabet!) comprised of 46 sounds. Small hiragana can be used to modify the sound of the leading character to expand the set of available phonemes. Here, "Chi (small)yo" becomes "cho".
Small tsu is special. It represents a doubled or germinated consonant.
For example ちょっと (chotto) sounds like chot-to. Example:
https://m.youtube.com/watch?v=kh9Kk_RHn8Q
Japanese is a really fun language. If you've ever had an interest in learning it, I recommend it. Reading kanji is a joy in and of itself, because it has a pleasant inner logic that gets deeper the more you learn.