Paper Only stamp
Ara ara~ Ara ara~ Ara ara~ ARA ARA~
Hum. Sorry. Just a little troma.

Stats:
HP: a bit lower than the average but, that's not why you would use her.
ATK: She is on the top of the list. And that's the most important for her.
DEF: It's not an important stat for her but it's still nice.

I guess we could say she is very solid in this part. Note shat she has exactly the same stats than Ume Apricot.


Skill
38% of 5.4x damages. That's very good. If you want more details, see my coment on Japanese Ume. Nothing much to say. That's the same thing.
Saku~ara~ara appreas as a powerful boss killer like her best Ume friend.

Abilities
And... that's it. Let the diamond shines brighter than the sun.

+22% ATK for all
Not the best ablity but a decent ATK buff. Something more selfish would be better but... I'll not complain about that.

x1.2 Skill activation
Once again, not the best ability of this kind but it's still solid and welcome for this kind of girl.

+35% ATK against bosses
That's why Sakura is good for boss battles. She will buff the whole team by +57% ATK just by herself. Add other girls ATK buff and it can be insane quickly with the right setup.

+12% Damages against bosses
And even more damages. Damage buff is even better since it will buff final damages, just before thay are applied (if I understand well). That means,it will boost raw+skill+crit+weak damages and make her ATK buff event better.
Once again, if you put her in the right team with a lot of damages against bosses buff, you can erase poor giant pests from this world with a pink and flowery magic beam.

Conclusion
She can deals heavy amount of damages against bosses and help her teams mate to do the same. If you use her with similar girls, you can blow every single boss in one or two turns. Andshe can act as a good finisher on boss with minions.
Her stats are high, her skill is one of the best in term of damages and all her abilities are made to increase her damages even more.She is clreay a must have.

Final verdict:
A Tier. Just A Tier for her. She can't really be S Tier, once again due to all the super good girls we have in it (espacially with the promoted girls and the power creep). And if she could reach this tier with the right team, she can't deserve it by herself. Even if she is strong and powerful and a solid ally, she is just a glass canon here to bring death among pests. she can't carry a battleor more without enough help to blow everything on her path in one single shot.


Sorry if Sakura rating is a bit rushed, I'm tied today but I don't want to leave the vote now and forgot about it later.