To LOVEる -とらぶる-

Rito Yuuki, a timid high schooler who can't confess to classmate Haruna Sairenji, finds his life upended when Lala Satalin Deviluke, a princess from the planet Deviluke, teleports into his bathtub while fleeing an arranged marriage. Lala declares Rito her fiancé on the spot, moves into his home, and drags him into constant run-ins with alien suitors, Deviluke enforcers sent by her father King Gid, and her own unpredictable inventions that malfunction at the worst moments.