それに, 其れに
Conjunction, Usually in kana
besides, in addition, also, moreover
それに、みんなに仲間もできるしね。
も
Particle
1. too, also, in addition, as well, (not) either (in a negative sentence)
as AもBも
2. both A and B, A as well as B, neither A nor B (in a negative sentence)
used for emphasis or to express absence of doubt regarding a quantity, etc.
3. even, as much as, as many as, as far as, as long as, no less than, no fewer than
often as 〜ても, 〜でも, 〜とも, etc.
4. even if, even though, although, in spite of
Adverb, See もう・3, Colloquialism, Abbreviation
5. further, more, again, another, the other