Games like No Need for Flowers
Games like No Need for Flowers include Touhou Tenkuushou ~ Hidden Star in Four Seasons., Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil, BALL x PIT, ZeroRanger, and Mirage Feathers. We matched them by the tags players give No Need for Flowers on Steam (Bullet Hell, Action, Shoot 'Em Up, Dragons, and Female Protagonist): closest matches first, and among equally close ones the better-known games.

Touhou Tenkuushou ~ Hidden Star in Four Seasons.
Shared: Bullet Hell · Shoot 'Em Up · Female Protagonist

Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Bullet Hell · Shoot 'Em Up · Female Protagonist

BALL x PIT
Shared: Action · Bullet Hell · Shoot 'Em Up

ZeroRanger
Shared: Bullet Hell · Shoot 'Em Up · Action

Mirage Feathers
Shared: Bullet Hell · Cute · Shoot 'Em Up

Vampire Survivors
Shared: Bullet Hell · Pixel Graphics · Action

LUFTRAUSERS
Shared: Bullet Hell · Action · Shoot 'Em Up

Rabi-Ribi
Shared: Bullet Hell · Female Protagonist · Cute

Touhou Kouryudou ~ Unconnected Marketeers.
Shared: Bullet Hell · Action · Shoot 'Em Up

Touhou Fuujinroku ~ Mountain of Faith.
Shared: Action · Bullet Hell · Shoot 'Em Up

Touhou Juuouen 〜 Unfinished Dream of All Living Ghost.
Shared: Action · Bullet Hell · Shoot 'Em Up

Touhou Kikeijuu ~ Wily Beast and Weakest Creature.
Shared: Bullet Hell · Shoot 'Em Up · Action

Touhou Kinjoukyou ~ Fossilized Wonders.
Shared: Bullet Hell · Shoot 'Em Up · Action

Dimension Tripper Neptune: TOP NEP
Shared: Action · Bullet Hell · Shoot 'Em Up

Maiden and Spell
Shared: Action · Bullet Hell · Shoot 'Em Up

Nova Drift
Shared: Bullet Hell · Shoot 'Em Up · Arcade

Planes, Bullets and Vodka
Shared: Action · Shoot 'Em Up · Bullet Hell

UBERMOSH
Shared: Action · Bullet Hell · Pixel Graphics

Touhou Chireiden ~ Subterranean Animism.
Shared: Action · Bullet Hell · Shoot 'Em Up

Bit Blaster XL
Shared: Bullet Hell · Shoot 'Em Up · Action

The Void Rains Upon Her Heart
Shared: Bullet Hell · Shoot 'Em Up · Action

Touhou Kanjuden ~ Legacy of Lunatic Kingdom.
Shared: Bullet Hell · Shoot 'Em Up · Action

BLUE REVOLVER
Shared: Bullet Hell · Shoot 'Em Up · Action

DRAINUS
Shared: Action · Shoot 'Em Up · Bullet Hell