Nakatani, Nio

An 'apocalyptic' boy-meets-girl rom-com about high school boy Yutaka Kuromori and the beautiful, popular girl adored by everyone, Aru Hoshina. Yutaka might shyly deny it, insisting “we’re not dating,” but Aru is always clinging to him, and the two are seen as the talk-of-the-school couple.

But behind what looks like an ordinary boy–girl high school relationship lies a secret—one so ruinous and capricious that, if mishandled, it could bring about the end of the world.

(Source: MangaDex)

Kimi wa Shuumatsu

My Beloved Apocalypse

きみは終末

Tsukiji, You

After a terrible accident left Seita hanging between life and death, it was Amé, a genius young inventor, who saved him...!

(Source: MANGA Plus)

Good Luck Time Machine

グッドラックタイムマシン

Andou, Kouhei

Mabuchi, Asako

Rio Mikazuki is a shinobi. That is, a shinobi living in the modern worldーa "shinewbi" of sorts. All of the ninjutsu and ninja tools of the current era are at her immediate disposal and are considerably more high-tech than before. However, it seems as though her senior partner, Igarashi, has learned how to use real ninjutsu through the long-forgotten traditional training methods of the old shinobi... The stage unfolds for a romantic comedy of two shinobi working in a modern world!

(Source: MANGA Plus)

Imanin

Shinewbi

イマニン

Yamagishi, Sai

Heji, Teito

Indifferent student Takatsugi-kun is living an uneventful life, until he meets Niina, a girl who's utterly obsessed with baseball. Though she seems to have nothing but baseball on her mind, Takatsugi finds himself drawn to her. Their relationship progresses smoothly...or does it? An unconventional triple-threat romantic comedy begins!

(Source: MANGA Plus)

Yakyuu Bunmei Alien

Aliens, Baseball, and Civilization

野球・文明・エイリアン

Aien, Kien

Sakurai, Yutaka

Kochira, Shuumatsu Teitai Iinkai

This Is the End Stagnation Committee.

こちら、終末停滞委員会。

Katou, Fumitaka

Super Triage

スーパートリアージ

Kitaumi, Tsuna

Satou, Tsutomu

The arc follows volume 27 of the light novel.

Mahouka Koukou no Rettousei: Kyuuten-hen

魔法科高校の劣等生 急転編

Baekwondal

Stellar Eyes

별의 눈동자

Yasuda, Genshou

Kumagai, Mahiro

Taking place in the near future, Akira Mizutame, a brilliant young scientist who developed Salt, a robot that assists people in their daily lives, finds himself at a dead end after a series of failed inventions. When a friend suggests he could "power up" his personal life by creating a girlfriend, he develops an artificial partner, "No. 0," who quite literally becomes his girlfriend. Torn between her programmed emotions and her own evolving feelings, No. 0 faces an emotional conflict. Will love blossom between her and Akira, who is unused to connecting with others, or...?

(Source: Official site, translated)

Manga Like Alien to Love